FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL, this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.

The remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:21436-1 advisory.

    Update to version 3.24.2.

    Security issues fixed:

    - CVE-2026-25941: out-of-bounds read in the FreeRDP client RDPGFX channel (bsc#1258919).
    - CVE-2026-25942: buffer overflow of global array in `xf_rail_server_execute_result` (bsc#1258920).
    - CVE-2026-25952: heap use-after-free in `xf_SetWindowMinMaxInfo` (bsc#1258921).
    - CVE-2026-25953: heap use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258923).
    - CVE-2026-25954: heap use-after-free in `xf_rail_server_local_move_size` (bsc#1258924).
    - CVE-2026-25955: heap use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258973).
    - CVE-2026-25959: heap use-after-free in `xf_cliprdr_provide_data_` (bsc#1258976).
    - CVE-2026-25997: heap use-after-free in `xf_clipboard_format_equal` (bsc#1258977).
    - CVE-2026-26271: buffer overread in FreeRDP icon processing (bsc#1258979).
    - CVE-2026-26955: out-of-bounds write in FreeRDP clients using the GDI surface pipeline (bsc#1258982).
    - CVE-2026-26965: out-of-bounds write in FreeRDP client RLE planar decode path (bsc#1258985).
    - CVE-2026-29774: heap buffer overflow in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path     (bsc#1259689).
    - CVE-2026-29775: out-of-bounds access in the FreeRDP client bitmap cache subsystem (bsc#1259684).
    - CVE-2026-29776: integer underflow in `update_read_cache_bitmap_order` (bsc#1259692).
    - CVE-2026-31806: heap buffer overflow in `nsc_process_message` (bsc#1259653).
    - CVE-2026-31883: heap buffer overwrite due to a `size_t` underflow in the IMA-ADPCM and MS-ADPCM audio     decoders       (bsc#1259679).
    - CVE-2026-31884: division by zero in MS-ADPCM and IMA-ADPCM decoders (bsc#1259680).
    - CVE-2026-31885: out-of-bounds read in MS-ADPCM and IMA-ADPCM decoders (bsc#1259686).
    - CVE-2026-31897: out-of-bounds read in `freerdp_bitmap_decompress_planar` (bsc#1259693).
    - CVE-2026-33952: client-side crash due to `WINPR_ASSERT()` failure in     `rts_read_auth_verifier_no_checks()`       (bsc#1261196).
    - CVE-2026-33977: client-side crash due to `WINPR_ASSERT()` failure in IMA ADPCM audio decoder     (bsc#1261198).
    - CVE-2026-33982: heap buffer overread in in `winpr_aligned_offset_recalloc` (bsc#1261222).
    - CVE-2026-33983: undefined behavior and resource exhaustion via 80 billion iteration loop in       `progressive_decompress_tile_upgrade` (bsc#1261200).
    - CVE-2026-33984: heap buffer overflow in ClearCodec `resize_vbar_entry` (bsc#1261211).
    - CVE-2026-33985: heap out-of-bounds read in `clear_decompress_glyph_data` (bsc#1261217).
    - CVE-2026-33986: heap out-of-bounds write due to H.264 YUV buffer dimension desync (bsc#1261223).
    - CVE-2026-33987: heap out-of-bounds write due to persistent cache bmpSize desync (bsc#1261226).
    - CVE-2026-33995: double-free vulnerability in `kerberos_AcceptSecurityContext` and       `kerberos_InitializeSecurityContextA` (bsc#1261227).

    Other updates and bugfixes:

    - Version 3.24.2:
      * [channels,video] fix wrong cast (#12511)
      * [codec,openh264] reject encoder ABI mismatch on runtime-loaded library (#12510)
      * [client,sdl] create a copy of rdpPointer (#12512)
      * [codec,video] properly pass intermediate format (#12518)
      * [utils, signal] lazily initialize Windows CRITICAL_SECTION to match POSIX static mutex behavior     (#12520) winpr:
        improve libunwind backtraces (#12530)
      * [server,shadow] remember selected caps (#12528)
      * Zero credential data before free in NLA and NTLM context (#12532)
      * [server,proxy] ignore missing client in input channel (#12536)
      * [server,proxy] ignore rdpdr messages (#12537)
      * [winpr,sspi] improve kerberos logging (#12538)
      * Codec fixes (#12542)

    - Version 3.24.1:
      * [warnings] fix various sign and cast warnings (#12480)
      * [client,x11] start with xfc->remote_app = TRUE; (#12491)
      * Sam file read regression fix (#12484)
      * [ncrypt,smartcardlogon] support ECC keys in PKCS#11 smartcard enumeration (#12490)
      * Fix: memory leak in rdp_client_establish_keys() (#12494)
      * Fix memory leak in freerdp_settings_int_buffer_copy() on error paths (libfreerdp/core/settings.c)     (#12486)
      * Code Cleanups (#12493)
      * Fix: memory leak in PCSC_SCardListReadersW() (#12495)
      * [channels,telemetry] use dynamic logging (#12496)
      * [channel,gfx] use generic plugin log (@12498, #12499)
      * [channels,audin] set error when audio_format_read fails (#12500)
      * [channels,video] unify error handling (#12502)
      * Fastpath fine grained lock (#12503)
      * [core,update] make the PlaySound callback non-mandatory (#12504)
      * Refinements: RPM build updates, FIPS improvements (#12506)

    - Version 3.24.0:
      * Completed the [[nodiscard]] marking of the API to warn about problematic
      * unchecked use of functions
      * Added full C23 support (default stays at C11) to allow new compilers
      * to do stricter checking
      * Improved X11 and SDL3 clients
      * Improved smartcard support
      * proxy now supports RFX graphics mode
      * Attribute nodiscard related chanes (#12325, #12360, #12395, #12406, #12421, #12426, #12177, #12403,     #12405, #12407,         #12409, #12408, #12412, #12413)
      * c23 related improvements (#12368, #12371, #12379, #12381, #12383, #12385, #12386, #12387, #12384)
      * Generic code cleanups (#12382, #12439, #12455, #12462, #12399, #12473) [core,utils] ignore NULL values     in         remove_rdpdr_type (#12372)
      * [codec,fdk] revert use of WinPR types (#12373)
      * [core,gateway] ignore incomplete rpc header (#12375, #12376)
      * [warnings] make function declaration names consistent (#12377)
      * [libfreerdp] Add new define for logon error info (#12380)
      * [client,x11] improve rails window locking (#12392)
      * Reload fix missing null checks (#12396)
      * Bounds checks (#12400)
      * [server,proxy] check for nullptr before using scard_call_context (#12404)
      * [uwac] fix rectangular glitch around surface damage regions (#12410)
      * Address various error handling inconsistencies (#12411)
      * [core,server] Improve WTS API locking (#12414)
      * Address some GCC compile issues (#12415, #12420)
      * Winpr atexit (#12416)
      * [winpr,smartcard] fix function pointer casts (#12422)
      * Xf timer fix (#12423)
      * [client,sdl] workaround for wlroots compositors (#12425)
      * [client,sdl] fix SdlWindow::query (#12378)
      * [winpr,smartcard] fix PCSC_ReleaseCardContext (#12427)
      * [client,x11] eliminate obsolete compile flags (#12428)
      * [client,common] skip sending input events when not connected (#12429)
      * Input connected checks (#12430)
      * Floatbar and display channel improvements (#12431)
      * [winpr,platform] fix WINPR_ATTR_NODISCARD definition (#12432)
      * [client] Fix writing of gatewayusagemethod to .rdp files (#12433)
      * Nodiscard finetune (#12435)
      * [core] fix missing gateway credential sync (#12436)
      * [client,sdl3] limit FREERDP_WLROOTS_HACK (#12441)
      * [core,settings] Allow FreeRDP_instance in setter (#12442)
      * [codec,h264] make log message trace (#12444)
      * X11 rails improve (#12440)
      * [codec,nsc] limit copy area in nsc_process_message (#12448)
      * Proxy support RFX and NSC settings (#12449)
      * [client,common] display a shortened help on parsing issues (#12450)
      * [winpr,smartcard] refine locking for pcsc layer (#12451)
      * [codec,swscale] allow runtime loading of swscale (#12452)
      * Swscale fallback (#12454)
      * Sdl multi scaling support (#12456)
      * [packaging,flatpak] update runtime and dependencies (#12457)
      * [codec,video] add doxygen version details (#12458)
      * [github,templates] update templates (#12460)
      * [client,sdl] allow FREERDP_WLROOTS_HACK for all sessions (#12461)
      * [warnings,nodiscard] add log messages for failures (#12463)
      * [gdi,gdi] ignore empty rectangles (#12467)
      * Smartcard fix smartcard-login, pass rdpContext for abort (#12466)
      * [winpr,smartcard] fix compiler warnings (#12469)
      * [winpr,timezone] fix search for transition dates (#12468)
      * [client,common] improve /p help (#12471)
      * Scard logging refactored (#12472)
      * [emu,scard] fix smartcard emulation (#12475)
      * Sdl null cursor (#12474)

    - Version 3.23.0:
      * Sdl cleanup (#12202)
      * [client,sdl] do not apply window offset (#12205)
      * [client,sdl] add SDL_Error to exceptions (#12214)
      * Rdp monitor log (#12215)
      * [winpr,smartcard] implement some attributes (#12213)
      * [client,windows] Fix return value checks for mouse event functions (#12279)
      * [channels,rdpecam] fix sws context checks (#12272)
      * [client,windows] Enhance error handling and context validation (#12264)
      * [client,windows] Add window handle validation in RDP_EVENT_TYPE_WINDOW_NEW (#12261)
      * [client,sdl] fix multimon/fullscreen on wayland (#12248)
      * Vendor by app (#12207)
      * [core,gateway] relax TSG parsing (#12283)
      * [winpr,smartcard] simplify PCSC_ReadDeviceSystemName (#12273)
      * [client,windows] Implement complete keyboard indicator synchronization (#12268)
      * Fixes more more more (#12286)
      * Use application details for names (#12285)
      * warning cleanups (#12289)
      * Warning cleanup (#12291)
      * [client,windows] Enhance memory safety with NULL checks and resource protection (#12271)
      * [client,x11] apply /size:xx% only once (#12293)
      * Freerdp config test (#12295)
      * [winpr,smartcard] fix returned attribute length (#12296)
      * [client,SDL3] Fix properly handle smart-sizing with fullscreen (#12298)
      * [core,test] fix use after free (#12299)
      * Sign warnings (#12300)
      * [cmake,compiler] disable -Wjump-misses-init (#12301)
      * [codec,color] fix input length checks (#12302)
      * [client,sdl] improve cursor updates, fix surface sizes (#12303)
      * Sdl fullscreen (#12217)
      * [client,sdl] fix move constructor of SdlWindow (#12305)
      * [utils,smartcard] check stream length on padding (#12306)
      * [android] Fix invert scrolling default value mismatch (#12309)
      * Clear fix bounds checks (#12310)
      * Winpr attr nodiscard fkt ptr (#12311)
      * [codec,planar] fix missing destination bounds checks (#12312)
      * [codec,clear] fix destination checks (#12315)
      * NSC Codec fixes (#12317)
      * Freerdp api nodiscard (#12313)
      * [allocations] fix growth of preallocated buffers (#12319)
      * Rdpdr simplify (#12320)
      * Resource fix (#12323)
      * [winpr,utils] ensure message queue capacity (#12322)
      * [server,shadow] fix return and parameter checks (#12330)
      * Shadow fixes (#12331)
      * [rdtk,nodiscard] mark rdtk API nodiscard (#12329)
      * [client,x11] fix XGetWindowProperty return handling (#12334)
      * Win32 signal (#12335)
      * [channel,usb] fix message parsing and creation (#12336)
      * [cmake] Define WINPR_DEFINE_ATTR_NODISCARD (#12338)
      * Proxy config fix (#12345)
      * [codec,progressive] refine progressive decoding (#12347)
      * [client,sdl] fix sdl_Pointer_New (#12350)
      * [core,gateway] parse [MS-TSGU] 2.2.10.5 HTTP_CHANNEL_RESPONSE_OPTIONAL (#12353)
      * X11 kbd sym (#12354)
      * Windows compile warning fixes (#12357,#12358,#12359)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20657-1 advisory.

    Update to version 3.24.2.

    Security issues fixed:

    - CVE-2026-25941: out-of-bounds read in the FreeRDP client RDPGFX channel (bsc#1258919).
    - CVE-2026-25942: buffer overflow of global array in `xf_rail_server_execute_result` (bsc#1258920).
    - CVE-2026-25952: heap use-after-free in `xf_SetWindowMinMaxInfo` (bsc#1258921).
    - CVE-2026-25953: heap use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258923).
    - CVE-2026-25954: heap use-after-free in `xf_rail_server_local_move_size` (bsc#1258924).
    - CVE-2026-25955: heap use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258973).
    - CVE-2026-25959: heap use-after-free in `xf_cliprdr_provide_data_` (bsc#1258976).
    - CVE-2026-25997: heap use-after-free in `xf_clipboard_format_equal` (bsc#1258977).
    - CVE-2026-26271: buffer overread in FreeRDP icon processing (bsc#1258979).
    - CVE-2026-26955: out-of-bounds write in FreeRDP clients using the GDI surface pipeline (bsc#1258982).
    - CVE-2026-26965: out-of-bounds write in FreeRDP client RLE planar decode path (bsc#1258985).
    - CVE-2026-29774: heap buffer overflow in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path     (bsc#1259689).
    - CVE-2026-29775: out-of-bounds access in the FreeRDP client bitmap cache subsystem (bsc#1259684).
    - CVE-2026-29776: integer underflow in `update_read_cache_bitmap_order` (bsc#1259692).
    - CVE-2026-31806: heap buffer overflow in `nsc_process_message` (bsc#1259653).
    - CVE-2026-31883: heap buffer overwrite due to a `size_t` underflow in the IMA-ADPCM and MS-ADPCM audio     decoders       (bsc#1259679).
    - CVE-2026-31884: division by zero in MS-ADPCM and IMA-ADPCM decoders (bsc#1259680).
    - CVE-2026-31885: out-of-bounds read in MS-ADPCM and IMA-ADPCM decoders (bsc#1259686).
    - CVE-2026-31897: out-of-bounds read in `freerdp_bitmap_decompress_planar` (bsc#1259693).
    - CVE-2026-33952: client-side crash due to `WINPR_ASSERT()` failure in     `rts_read_auth_verifier_no_checks()`       (bsc#1261196).
    - CVE-2026-33977: client-side crash due to `WINPR_ASSERT()` failure in IMA ADPCM audio decoder     (bsc#1261198).
    - CVE-2026-33982: heap buffer overread in in `winpr_aligned_offset_recalloc` (bsc#1261222).
    - CVE-2026-33983: undefined behavior and resource exhaustion via 80 billion iteration loop in       `progressive_decompress_tile_upgrade` (bsc#1261200).
    - CVE-2026-33984: heap buffer overflow in ClearCodec `resize_vbar_entry` (bsc#1261211).
    - CVE-2026-33985: heap out-of-bounds read in `clear_decompress_glyph_data` (bsc#1261217).
    - CVE-2026-33986: heap out-of-bounds write due to H.264 YUV buffer dimension desync (bsc#1261223).
    - CVE-2026-33987: heap out-of-bounds write due to persistent cache bmpSize desync (bsc#1261226).
    - CVE-2026-33995: double-free vulnerability in `kerberos_AcceptSecurityContext` and       `kerberos_InitializeSecurityContextA` (bsc#1261227).

    Other updates and bugfixes:

    - Version 3.24.2:
      * [channels,video] fix wrong cast (#12511)
      * [codec,openh264] reject encoder ABI mismatch on runtime-loaded library (#12510)
      * [client,sdl] create a copy of rdpPointer (#12512)
      * [codec,video] properly pass intermediate format (#12518)
      * [utils, signal] lazily initialize Windows CRITICAL_SECTION to match POSIX static mutex behavior     (#12520) winpr:
        improve libunwind backtraces (#12530)
      * [server,shadow] remember selected caps (#12528)
      * Zero credential data before free in NLA and NTLM context (#12532)
      * [server,proxy] ignore missing client in input channel (#12536)
      * [server,proxy] ignore rdpdr messages (#12537)
      * [winpr,sspi] improve kerberos logging (#12538)
      * Codec fixes (#12542)

    - Version 3.24.1:
      * [warnings] fix various sign and cast warnings (#12480)
      * [client,x11] start with xfc->remote_app = TRUE; (#12491)
      * Sam file read regression fix (#12484)
      * [ncrypt,smartcardlogon] support ECC keys in PKCS#11 smartcard enumeration (#12490)
      * Fix: memory leak in rdp_client_establish_keys() (#12494)
      * Fix memory leak in freerdp_settings_int_buffer_copy() on error paths (libfreerdp/core/settings.c)     (#12486)
      * Code Cleanups (#12493)
      * Fix: memory leak in PCSC_SCardListReadersW() (#12495)
      * [channels,telemetry] use dynamic logging (#12496)
      * [channel,gfx] use generic plugin log (@12498, #12499)
      * [channels,audin] set error when audio_format_read fails (#12500)
      * [channels,video] unify error handling (#12502)
      * Fastpath fine grained lock (#12503)
      * [core,update] make the PlaySound callback non-mandatory (#12504)
      * Refinements: RPM build updates, FIPS improvements (#12506)

    - Version 3.24.0:
      * Completed the [[nodiscard]] marking of the API to warn about problematic
      * unchecked use of functions
      * Added full C23 support (default stays at C11) to allow new compilers
      * to do stricter checking
      * Improved X11 and SDL3 clients
      * Improved smartcard support
      * proxy now supports RFX graphics mode
      * Attribute nodiscard related chanes (#12325, #12360, #12395, #12406, #12421, #12426, #12177, #12403,     #12405, #12407,         #12409, #12408, #12412, #12413)
      * c23 related improvements (#12368, #12371, #12379, #12381, #12383, #12385, #12386, #12387, #12384)
      * Generic code cleanups (#12382, #12439, #12455, #12462, #12399, #12473) [core,utils] ignore NULL values     in         remove_rdpdr_type (#12372)
      * [codec,fdk] revert use of WinPR types (#12373)
      * [core,gateway] ignore incomplete rpc header (#12375, #12376)
      * [warnings] make function declaration names consistent (#12377)
      * [libfreerdp] Add new define for logon error info (#12380)
      * [client,x11] improve rails window locking (#12392)
      * Reload fix missing null checks (#12396)
      * Bounds checks (#12400)
      * [server,proxy] check for nullptr before using scard_call_context (#12404)
      * [uwac] fix rectangular glitch around surface damage regions (#12410)
      * Address various error handling inconsistencies (#12411)
      * [core,server] Improve WTS API locking (#12414)
      * Address some GCC compile issues (#12415, #12420)
      * Winpr atexit (#12416)
      * [winpr,smartcard] fix function pointer casts (#12422)
      * Xf timer fix (#12423)
      * [client,sdl] workaround for wlroots compositors (#12425)
      * [client,sdl] fix SdlWindow::query (#12378)
      * [winpr,smartcard] fix PCSC_ReleaseCardContext (#12427)
      * [client,x11] eliminate obsolete compile flags (#12428)
      * [client,common] skip sending input events when not connected (#12429)
      * Input connected checks (#12430)
      * Floatbar and display channel improvements (#12431)
      * [winpr,platform] fix WINPR_ATTR_NODISCARD definition (#12432)
      * [client] Fix writing of gatewayusagemethod to .rdp files (#12433)
      * Nodiscard finetune (#12435)
      * [core] fix missing gateway credential sync (#12436)
      * [client,sdl3] limit FREERDP_WLROOTS_HACK (#12441)
      * [core,settings] Allow FreeRDP_instance in setter (#12442)
      * [codec,h264] make log message trace (#12444)
      * X11 rails improve (#12440)
      * [codec,nsc] limit copy area in nsc_process_message (#12448)
      * Proxy support RFX and NSC settings (#12449)
      * [client,common] display a shortened help on parsing issues (#12450)
      * [winpr,smartcard] refine locking for pcsc layer (#12451)
      * [codec,swscale] allow runtime loading of swscale (#12452)
      * Swscale fallback (#12454)
      * Sdl multi scaling support (#12456)
      * [packaging,flatpak] update runtime and dependencies (#12457)
      * [codec,video] add doxygen version details (#12458)
      * [github,templates] update templates (#12460)
      * [client,sdl] allow FREERDP_WLROOTS_HACK for all sessions (#12461)
      * [warnings,nodiscard] add log messages for failures (#12463)
      * [gdi,gdi] ignore empty rectangles (#12467)
      * Smartcard fix smartcard-login, pass rdpContext for abort (#12466)
      * [winpr,smartcard] fix compiler warnings (#12469)
      * [winpr,timezone] fix search for transition dates (#12468)
      * [client,common] improve /p help (#12471)
      * Scard logging refactored (#12472)
      * [emu,scard] fix smartcard emulation (#12475)
      * Sdl null cursor (#12474)

    - Version 3.23.0:
      * Sdl cleanup (#12202)
      * [client,sdl] do not apply window offset (#12205)
      * [client,sdl] add SDL_Error to exceptions (#12214)
      * Rdp monitor log (#12215)
      * [winpr,smartcard] implement some attributes (#12213)
      * [client,windows] Fix return value checks for mouse event functions (#12279)
      * [channels,rdpecam] fix sws context checks (#12272)
      * [client,windows] Enhance error handling and context validation (#12264)
      * [client,windows] Add window handle validation in RDP_EVENT_TYPE_WINDOW_NEW (#12261)
      * [client,sdl] fix multimon/fullscreen on wayland (#12248)
      * Vendor by app (#12207)
      * [core,gateway] relax TSG parsing (#12283)
      * [winpr,smartcard] simplify PCSC_ReadDeviceSystemName (#12273)
      * [client,windows] Implement complete keyboard indicator synchronization (#12268)
      * Fixes more more more (#12286)
      * Use application details for names (#12285)
      * warning cleanups (#12289)
      * Warning cleanup (#12291)
      * [client,windows] Enhance memory safety with NULL checks and resource protection (#12271)
      * [client,x11] apply /size:xx% only once (#12293)
      * Freerdp config test (#12295)
      * [winpr,smartcard] fix returned attribute length (#12296)
      * [client,SDL3] Fix properly handle smart-sizing with fullscreen (#12298)
      * [core,test] fix use after free (#12299)
      * Sign warnings (#12300)
      * [cmake,compiler] disable -Wjump-misses-init (#12301)
      * [codec,color] fix input length checks (#12302)
      * [client,sdl] improve cursor updates, fix surface sizes (#12303)
      * Sdl fullscreen (#12217)
      * [client,sdl] fix move constructor of SdlWindow (#12305)
      * [utils,smartcard] check stream length on padding (#12306)
      * [android] Fix invert scrolling default value mismatch (#12309)
      * Clear fix bounds checks (#12310)
      * Winpr attr nodiscard fkt ptr (#12311)
      * [codec,planar] fix missing destination bounds checks (#12312)
      * [codec,clear] fix destination checks (#12315)
      * NSC Codec fixes (#12317)
      * Freerdp api nodiscard (#12313)
      * [allocations] fix growth of preallocated buffers (#12319)
      * Rdpdr simplify (#12320)
      * Resource fix (#12323)
      * [winpr,utils] ensure message queue capacity (#12322)
      * [server,shadow] fix return and parameter checks (#12330)
      * Shadow fixes (#12331)
      * [rdtk,nodiscard] mark rdtk API nodiscard (#12329)
      * [client,x11] fix XGetWindowProperty return handling (#12334)
      * Win32 signal (#12335)
      * [channel,usb] fix message parsing and creation (#12336)
      * [cmake] Define WINPR_DEFINE_ATTR_NODISCARD (#12338)
      * Proxy config fix (#12345)
      * [codec,progressive] refine progressive decoding (#12347)
      * [client,sdl] fix sdl_Pointer_New (#12350)
      * [core,gateway] parse [MS-TSGU] 2.2.10.5 HTTP_CHANNEL_RESPONSE_OPTIONAL (#12353)
      * X11 kbd sym (#12354)
      * Windows compile warning fixes (#12357,#12358,#12359)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1640-1 advisory.

    - CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted `WIRE_TO_SURFACE_2` PDU     (bsc#1258919).
    - CVE-2026-25942: Global-buffer-overflow in `xf_rail_server_execute_result` (bsc#1258920).
    - CVE-2026-25952: Heap-use-after-free in `xf_SetWindowMinMaxInfo` (bsc#1258921).
    - CVE-2026-25953: Heap-use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258923).
    - CVE-2026-25954: Heap-use-after-free in `xf_rail_server_local_move_size` (bsc#1258924).
    - CVE-2026-25997: Heap-use-after-free in `xf_clipboard_format_equal` (bsc#1258977).
    - CVE-2026-26986: Heap-use-after-free in `rail_window_free` (bsc#1258967).
    - CVE-2026-27015: Smartcard NDR alignment padding triggers reachable `WINPR_ASSERT` abort (bsc#1258987).
    - CVE-2026-27951: Denial of Service via endless blocking loop in `Stream_EnsureCapacity` (bsc#1258939).
    - CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
    - CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
    - CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
    - CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1633-1 advisory.

    - CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted `WIRE_TO_SURFACE_2` PDU     (bsc#1258919).
    - CVE-2026-25942: Global-buffer-overflow in `xf_rail_server_execute_result` (bsc#1258920).
    - CVE-2026-25952: Heap-use-after-free in `xf_SetWindowMinMaxInfo` (bsc#1258921).
    - CVE-2026-25953: Heap-use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258923).
    - CVE-2026-25954: Heap-use-after-free in `xf_rail_server_local_move_size` (bsc#1258924).
    - CVE-2026-25955: Heap-use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258973).
    - CVE-2026-25959: Heap-use-after-free in `xf_cliprdr_provide_data_` (bsc#1258976).
    - CVE-2026-25997: Heap-use-after-free in `xf_clipboard_format_equal` (bsc#1258977).
    - CVE-2026-26986: Heap-use-after-free in `rail_window_free` (bsc#1258967).
    - CVE-2026-27015: Smartcard NDR alignment padding triggers reachable `WINPR_ASSERT` abort (bsc#1258987).
    - CVE-2026-27950: Denial of service due to incomplete fix for heap-use-after-free vulnerability     (bsc#1258941).
    - CVE-2026-27951: Denial of service via endless blocking loop in `Stream_EnsureCapacity` (bsc#1258939).
    - CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
    - CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
    - CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
    - CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1634-1 advisory.

    - CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted `WIRE_TO_SURFACE_2` PDU     (bsc#1258919).
    - CVE-2026-25942: Global-buffer-overflow in `xf_rail_server_execute_result` (bsc#1258920).
    - CVE-2026-25952: Heap-use-after-free in `xf_SetWindowMinMaxInfo` (bsc#1258921).
    - CVE-2026-25953: Heap-use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258923).
    - CVE-2026-25954: Heap-use-after-free in `xf_rail_server_local_move_size` (bsc#1258924).
    - CVE-2026-25997: Heap-use-after-free in `xf_clipboard_format_equal` (bsc#1258977).
    - CVE-2026-26986: Heap-use-after-free in `rail_window_free` (bsc#1258967).
    - CVE-2026-27015: Smartcard NDR alignment padding triggers reachable `WINPR_ASSERT` abort (bsc#1258987).
    - CVE-2026-27951: Denial of service via endless blocking loop in `Stream_EnsureCapacity` (bsc#1258939).
    - CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
    - CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
    - CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
    - CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1632-1 advisory.

    - CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted `WIRE_TO_SURFACE_2` PDU     (bsc#1258919).
    - CVE-2026-25942: Global-buffer-overflow in `xf_rail_server_execute_result` (bsc#1258920).
    - CVE-2026-25952: Heap-use-after-free in `xf_SetWindowMinMaxInfo` (bsc#1258921).
    - CVE-2026-25953: Heap-use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258923).
    - CVE-2026-25954: Heap-use-after-free in `xf_rail_server_local_move_size` (bsc#1258924).
    - CVE-2026-25997: Heap-use-after-free in `xf_clipboard_format_equal` (bsc#1258977).
    - CVE-2026-26986: Heap-use-after-free in `rail_window_free` (bsc#1258967).
    - CVE-2026-27015: Smartcard NDR alignment padding triggers reachable `WINPR_ASSERT` abort (bsc#1258987).
    - CVE-2026-27951: Denial of service via endless blocking loop in `Stream_EnsureCapacity` (bsc#1258939).
    - CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
    - CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
    - CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
    - CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1635-1 advisory.

    - CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted `WIRE_TO_SURFACE_2` PDU     (bsc#1258919).
    - CVE-2026-25942: Global-buffer-overflow in `xf_rail_server_execute_result` (bsc#1258920).
    - CVE-2026-25952: Heap-use-after-free in `xf_SetWindowMinMaxInfo` (bsc#1258921).
    - CVE-2026-25953: Heap-use-after-free in `xf_AppUpdateWindowFromSurface` (bsc#1258923).
    - CVE-2026-25954: Heap-use-after-free in `xf_rail_server_local_move_size` (bsc#1258924).
    - CVE-2026-25997: Heap-use-after-free in `xf_clipboard_format_equal` (bsc#1258977).
    - CVE-2026-26986: Heap-use-after-free in `rail_window_free` (bsc#1258967).
    - CVE-2026-27015: Smartcard NDR alignment padding triggers reachable `WINPR_ASSERT` abort (bsc#1258987).
    - CVE-2026-27951: Denial of service via endless blocking loop in `Stream_EnsureCapacity` (bsc#1258939).
    - CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
    - CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
    - CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
    - CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of freerdp installed on the remote host is prior to 2.11.7-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3239 advisory.

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap     buffer overflow occurs in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path due to missing     horizontal bounds validation of H.264 metablock regionRects coordinates.  In yuv.c, the clamp() function     (line 347) only validates top/bottom against the surface/YUV height, but never checks left/right against     the surface width. When avc420_yuv_to_rgb (line 67) computes destination and source pointers using     rect->left, it performs unchecked pointer arithmetic that can reach far beyond the allocated surface     buffer. A malicious server sends a WIRE_TO_SURFACE_PDU_1 with AVC420 codec containing a regionRects entry     where left greatly exceeds the surface width (e.g., left=60000 on a 128px surface). The H.264 bitstream     decodes successfully, then yuv420_process_work_callback calls avc420_yuv_to_rgb which computes pDstPoint =     pDstData + rect->top * nDstStep + rect->left * 4, writing 16-byte SSE vectors 1888+ bytes past the     allocated heap region. This vulnerability is fixed in 3.24.0. (CVE-2026-29774)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap out-     of-bounds read/write occurs in FreeRDP's bitmap cache subsystem due to an off-by-one boundary check in     bitmap_cache_put. A malicious server can send a CACHE_BITMAP_ORDER (Rev1) with cacheId equal to maxCells,     bypassing the guard and accessing cells[] one element past the allocated array. This vulnerability is     fixed in 3.24.0. (CVE-2026-29775)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, Integer Underflow in     update_read_cache_bitmap_order Function of FreeRDP's Core Library This vulnerability is fixed in 3.24.0.
    (CVE-2026-29776)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in     the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio     channel. In libfreerdp/codec/dsp.c, the IMA-ADPCM and MS-ADPCM decoders subtract block header sizes from a     size_t variable without checking for underflow. When nBlockAlign (received from the server) is set such     that size % block_size == 0 triggers the header parsing at a point where size is smaller than the header     (4 or 8 bytes), the subtraction wraps size to ~SIZE_MAX. The while (size > 0) loop then continues for an     astronomical number of iterations. This vulnerability is fixed in 3.24.0. (CVE-2026-31883)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-     ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both     ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The     nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not     validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE     (floating point exception) crash. This vulnerability is fixed in 3.24.0. (CVE-2026-31884)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-     bounds read in MS-ADPCM and IMA-ADPCM decoders due to unchecked predictor and step_index values from input     data. This vulnerability is fixed in 3.24.0. (CVE-2026-31885)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-     bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which     points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL,     this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.
    (CVE-2026-31897)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-07418a381f advisory.

    Update to 3.24.2

    It fixes CVE-2026-33952, CVE-2026-33977, CVE-2026-33982, CVE-2026-33983,     CVE-2026-33984, CVE-2026-33985, CVE-2026-33986, CVE-2026-33987 and     CVE-2026-33995.

    ----

    Update to 3.24.0 (CVE-2026-29774, CVE-2026-29775, CVE-2026-29776, CVE-2026-31806, CVE-2026-31883,     CVE-2026-31884, CVE-2026-31885, CVE-2026-31897)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1520 advisory.

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap     buffer overflow occurs in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path due to missing     horizontal bounds validation of H.264 metablock regionRects coordinates.  In yuv.c, the clamp() function     (line 347) only validates top/bottom against the surface/YUV height, but never checks left/right against     the surface width. When avc420_yuv_to_rgb (line 67) computes destination and source pointers using     rect->left, it performs unchecked pointer arithmetic that can reach far beyond the allocated surface     buffer. A malicious server sends a WIRE_TO_SURFACE_PDU_1 with AVC420 codec containing a regionRects entry     where left greatly exceeds the surface width (e.g., left=60000 on a 128px surface). The H.264 bitstream     decodes successfully, then yuv420_process_work_callback calls avc420_yuv_to_rgb which computes pDstPoint =     pDstData + rect->top * nDstStep + rect->left * 4, writing 16-byte SSE vectors 1888+ bytes past the     allocated heap region. This vulnerability is fixed in 3.24.0. (CVE-2026-29774)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap out-     of-bounds read/write occurs in FreeRDP's bitmap cache subsystem due to an off-by-one boundary check in     bitmap_cache_put. A malicious server can send a CACHE_BITMAP_ORDER (Rev1) with cacheId equal to maxCells,     bypassing the guard and accessing cells[] one element past the allocated array. This vulnerability is     fixed in 3.24.0. (CVE-2026-29775)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, Integer Underflow in     update_read_cache_bitmap_order Function of FreeRDP's Core Library This vulnerability is fixed in 3.24.0.
    (CVE-2026-29776)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in     the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio     channel. In libfreerdp/codec/dsp.c, the IMA-ADPCM and MS-ADPCM decoders subtract block header sizes from a     size_t variable without checking for underflow. When nBlockAlign (received from the server) is set such     that size % block_size == 0 triggers the header parsing at a point where size is smaller than the header     (4 or 8 bytes), the subtraction wraps size to ~SIZE_MAX. The while (size > 0) loop then continues for an     astronomical number of iterations. This vulnerability is fixed in 3.24.0. (CVE-2026-31883)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-     ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both     ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The     nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not     validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE     (floating point exception) crash. This vulnerability is fixed in 3.24.0. (CVE-2026-31884)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-     bounds read in MS-ADPCM and IMA-ADPCM decoders due to unchecked predictor and step_index values from input     data. This vulnerability is fixed in 3.24.0. (CVE-2026-31885)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-     bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which     points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL,     this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.
    (CVE-2026-31897)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-34886abfad advisory.

    Update to 3.24.0 (CVE-2026-29774, CVE-2026-29775, CVE-2026-29776, CVE-2026-31806, CVE-2026-31883,     CVE-2026-31884, CVE-2026-31885, CVE-2026-31897)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-2c1ab5b23b advisory.

    Update to 3.24.0 (CVE-2026-29774, CVE-2026-29775, CVE-2026-29776, CVE-2026-31806, CVE-2026-31883,     CVE-2026-31884, CVE-2026-31885, CVE-2026-31897)


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-bf4c5bb9c5 advisory.

    Automatic update for freerdp-3.24.0-1.fc45.

    ##### **Changelog**

    ```
    * Mon Mar 16 2026 Ondrej Holy <oholy@redhat.com> - 2:3.24.0-1
    - Update to 3.24.0 (CVE-2026-29774, CVE-2026-29775, CVE-2026-29776,       CVE-2026-31806, CVE-2026-31883, CVE-2026-31884, CVE-2026-31885,       CVE-2026-31897)       Resolves: rhbz#2447295, rhbz#2447393, rhbz#2447412, rhbz#2447415       Resolves: rhbz#2447417, rhbz#2447419, rhbz#2447423, rhbz#2447428       Resolves: rhbz#2447431

    ```

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-     bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which     points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL,     this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.
    (CVE-2026-31897)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
312138	SUSE SLES16 Security Update : freerdp (SUSE-SU-2026:21436-1)	Nessus	SuSE Local Security Checks	critical
312116	openSUSE 16 Security Update : freerdp (openSUSE-SU-2026:20657-1)	Nessus	SuSE Local Security Checks	critical
311755	SUSE SLED15 / SLES15 Security Update : freerdp2 (SUSE-SU-2026:1640-1)	Nessus	SuSE Local Security Checks	critical
310650	SUSE SLED15 / SLES15 Security Update : freerdp (SUSE-SU-2026:1633-1)	Nessus	SuSE Local Security Checks	medium
310649	SUSE SLES15 Security Update : freerdp (SUSE-SU-2026:1634-1)	Nessus	SuSE Local Security Checks	medium
310648	SUSE SLES15 Security Update : freerdp (SUSE-SU-2026:1632-1)	Nessus	SuSE Local Security Checks	medium
310647	SUSE SLES12 Security Update : freerdp (SUSE-SU-2026:1635-1)	Nessus	SuSE Local Security Checks	medium
306278	Amazon Linux 2 : freerdp, --advisory ALAS2-2026-3239 (ALAS-2026-3239)	Nessus	Amazon Linux Local Security Checks	critical
304936	Fedora 42 : freerdp (2026-07418a381f)	Nessus	Fedora Local Security Checks	critical
304610	Amazon Linux 2023 : freerdp, freerdp-devel, freerdp-libs (ALAS2023-2026-1520)	Nessus	Amazon Linux Local Security Checks	critical
303801	Fedora 43 : freerdp (2026-34886abfad)	Nessus	Fedora Local Security Checks	critical
303772	Fedora 44 : freerdp (2026-2c1ab5b23b)	Nessus	Fedora Local Security Checks	critical
302502	Fedora 45 : freerdp (2026-bf4c5bb9c5)	Nessus	Fedora Local Security Checks	critical
302235	Linux Distros Unpatched Vulnerability : CVE-2026-31897	Nessus	Misc.	critical

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CVE-2026-31897

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Tenable Plugins

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