FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, the gdi_surface_bits() function processes SURFACE_BITS_COMMAND messages sent by the RDP server. When the command is handled using NSCodec, the bmp.width and bmp.height values provided by the server are not properly validated against the actual desktop dimensions. A malicious RDP server can supply crafted bmp.width and bmp.height values that exceed the expected surface size. Because these values are used during bitmap decoding and memory operations without proper bounds checking, this can lead to a heap buffer overflow. Since the attacker can also control the associated pixel data transmitted by the server, the overflow may be exploitable to overwrite adjacent heap memory. This vulnerability is fixed in 3.24.0.

suse_linux SUSE-SU-2026:1129-1: SUSE SLES15 : Security update for freerdp (Important) (SUSE-SU-2026:1129-1)

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.

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-397:10 advisory.

    * freerdp: FreeRDP heap-use-after-free (CVE-2026-22856)
      * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854)
      * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852)
      * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732)
      * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676)
      * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491)
      * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948)
      * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684)
      * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681)
      * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683)
      * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679)
      * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675)
      * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages     (CVE-2026-31806)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:6340 advisory.

    * freerdp: FreeRDP heap-use-after-free (CVE-2026-22856)
      * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854)
      * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852)
      * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732)
      * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676)
      * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491)
      * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948)
      * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684)
      * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681)
      * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683)
      * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679)
      * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675)
      * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages     (CVE-2026-31806)

Tenable has extracted the preceding description block directly from the AlmaLinux 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-2026:1164-1 advisory.

    - CVE-2026-26271: Buffer Overread in FreeRDP Icon Processing (bsc#1258979).
    - CVE-2026-26955: Out-of-bounds Write in freerdp (bsc#1258982).
    - CVE-2026-26965: Out-of-bounds Write in freerdp (bsc#1258985).
    - CVE-2026-31806: improper validation of server messages can lead to a heap buffer overflow and arbitrary     code execution       (bsc#1259653).
    - CVE-2026-31883: crafted RDPSND audio format and wave data can cause a heap buffer overflow write     (bsc#1259679).
    - CVE-2026-31885: unchecked predictor can lead to an out-of-bounds read (bsc#1259686).

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-2026:1165-1 advisory.

    - CVE-2026-26271: Buffer Overread in FreeRDP Icon Processing (bsc#1258979).
    - CVE-2026-26955: Out-of-bounds Write in freerdp (bsc#1258982).
    - CVE-2026-26965: Out-of-bounds Write in freerdp (bsc#1258985).
    - CVE-2026-31806: improper validation of server messages can lead to a heap buffer overflow and arbitrary     code execution       (bsc#1259653).
    - CVE-2026-31883: crafted RDPSND audio format and wave data can cause a heap buffer overflow write     (bsc#1259679).
    - CVE-2026-31885: unchecked predictor can lead to an out-of-bounds read (bsc#1259686).

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1512 advisory.

    FreeRDP is a free implementation of the Remote Desktop Protocol. Versions on the 2.x branch prior to to     2.11.8 and on the 3.x branch prior to 3.23.0 have an out-of-bounds read vulnerability in the FreeRDP     client's RDPGFX channel that allows a malicious RDP server to read uninitialized heap memory by sending a     crafted WIRE_TO_SURFACE_2 PDU with a `bitmapDataLength` value larger than the actual data in the packet.
    This can lead to information disclosure or client crashes when a user connects to a malicious server.
    Versions 2.11.8 and 3.23.0 fix the issue. (CVE-2026-25941)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_rail_server_execute_result` indexes the global `error_code_names[]` array (7 elements, indices 0-6)     with an unchecked `execResult->execResult` value received from the server, allowing an out-of-bounds read     when the server sends an `execResult` value of 7 or greater. Version 3.23.0 fixes the issue.
    (CVE-2026-25942)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_SetWindowMinMaxInfo` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window` in     `xf_rail_server_min_max_info` returns an unprotected pointer from the `railWindows` hash table, and the     main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread     is still using the pointer. Version 3.23.0 fixes the issue. (CVE-2026-25952)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_AppUpdateWindowFromSurface` reads from a freed `xfAppWindow` because the RDPGFX DVC thread obtains a     bare pointer via `xf_rail_get_window` without any lifetime protection, while the main thread can     concurrently delete the window through a fastpath window-delete order. Version 3.23.0 fixes the issue.
    (CVE-2026-25953)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_rail_server_local_move_size` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window`     returns an unprotected pointer from the `railWindows` hash table, and the main thread can concurrently     delete the window (via a window delete order) while the RAIL channel thread is still using the pointer.
    Version 3.23.0 fixes the issue. (CVE-2026-25954)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_AppUpdateWindowFromSurface` reuses a cached `XImage` whose `data` pointer references a freed RDPGFX     surface buffer, because `gdi_DeleteSurface` frees `surface->data` without invalidating the     `appWindow->image` that aliases it. Version 3.23.0 fixes the issue. (CVE-2026-25955)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_cliprdr_provide_data_` passes freed `pDstData` to `XChangeProperty` because the cliprdr channel thread     calls `xf_cliprdr_server_format_data_response` which converts and uses the clipboard data without holding     any lock, while the X11 event thread concurrently calls `xf_cliprdr_clear_cached_data` - `HashTable_Clear`     which frees the same data via `xf_cached_data_free`, triggering a heap use after free. Version 3.23.0     fixes the issue. (CVE-2026-25959)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_clipboard_format_equal` reads freed `lastSentFormats` memory because `xf_clipboard_formats_free`     (called from the cliprdr channel thread during auto-reconnect) frees the array while the X11 event thread     concurrently iterates it in `xf_clipboard_changed`, triggering a heap use after free. Version 3.23.0 fixes     the issue. (CVE-2026-25997)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer     overread in `freerdp_image_copy_from_icon_data()` (libfreerdp/codec/color.c) can be triggered by crafted     RDP Window Icon (TS_ICON_INFO) data. The bug is reachable over the network when a client processes icon     data from an RDP server (or from a man-in-the-middle). Version 3.23.0 fixes the issue. (CVE-2026-26271)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `rail_window_free` dereferences a freed `xfAppWindow` pointer during `HashTable_Free` cleanup because     `xf_rail_window_common` calls `free(appWindow)` on title allocation failure without first removing the     entry from the `railWindows` hash table, leaving a dangling pointer that is freed again on disconnect.
    Version 3.23.0 fixes the vulnerability. (CVE-2026-26986)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a missing bounds     check in `smartcard_unpack_read_size_align()` (`libfreerdp/utils/smartcard_pack.c:1703`) allows a     malicious RDP server to crash the FreeRDP client via a reachable `WINPR_ASSERT` - `abort()`. The crash     occurs in upstream builds where `WITH_VERBOSE_WINPR_ASSERT=ON` (default in FreeRDP 3.22.0 / current WinPR     CMake defaults). Smartcard redirection must be explicitly enabled by the user (e.g., `xfreerdp     /smartcard`; `/smartcard-logon` implies `/smartcard`). Version 3.23.0 fixes the issue. (CVE-2026-27015)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the     heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow     referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to     the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a     situation where the advisory suggests the vulnerability is fully resolved, while builds or environments     still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.
    (CVE-2026-27950)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function     `Stream_EnsureCapacity` can create an endless blocking loop. This may affect all client and server     implementations using `FreeRDP`. For practical exploitation this will only work on 32bit systems where the     available physical memory is `>= SIZE_MAX`. Version 3.23.0 contains a patch. No known workarounds are     available. (CVE-2026-27951)

    A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). The     `gdi_surface_bits()` function, which processes `SURFACE_BITS_COMMAND` messages, does not properly validate     image dimensions (`bmp.width` and `bmp.height`) provided by a malicious RDP server. This can lead to a     heap buffer overflow during bitmap decoding and memory operations. A remote attacker could exploit this to     overwrite adjacent memory, potentially resulting in arbitrary code execution. (CVE-2026-31806)

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 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 ALAS2-2026-3221 advisory.

    FreeRDP is a free implementation of the Remote Desktop Protocol. Versions on the 2.x branch prior to to     2.11.8 and on the 3.x branch prior to 3.23.0 have an out-of-bounds read vulnerability in the FreeRDP     client's RDPGFX channel that allows a malicious RDP server to read uninitialized heap memory by sending a     crafted WIRE_TO_SURFACE_2 PDU with a `bitmapDataLength` value larger than the actual data in the packet.
    This can lead to information disclosure or client crashes when a user connects to a malicious server.
    Versions 2.11.8 and 3.23.0 fix the issue. (CVE-2026-25941)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_rail_server_execute_result` indexes the global `error_code_names[]` array (7 elements, indices 0-6)     with an unchecked `execResult->execResult` value received from the server, allowing an out-of-bounds read     when the server sends an `execResult` value of 7 or greater. Version 3.23.0 fixes the issue.
    (CVE-2026-25942)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_SetWindowMinMaxInfo` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window` in     `xf_rail_server_min_max_info` returns an unprotected pointer from the `railWindows` hash table, and the     main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread     is still using the pointer. Version 3.23.0 fixes the issue. (CVE-2026-25952)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_AppUpdateWindowFromSurface` reads from a freed `xfAppWindow` because the RDPGFX DVC thread obtains a     bare pointer via `xf_rail_get_window` without any lifetime protection, while the main thread can     concurrently delete the window through a fastpath window-delete order. Version 3.23.0 fixes the issue.
    (CVE-2026-25953)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_rail_server_local_move_size` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window`     returns an unprotected pointer from the `railWindows` hash table, and the main thread can concurrently     delete the window (via a window delete order) while the RAIL channel thread is still using the pointer.
    Version 3.23.0 fixes the issue. (CVE-2026-25954)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `xf_clipboard_format_equal` reads freed `lastSentFormats` memory because `xf_clipboard_formats_free`     (called from the cliprdr channel thread during auto-reconnect) frees the array while the X11 event thread     concurrently iterates it in `xf_clipboard_changed`, triggering a heap use after free. Version 3.23.0 fixes     the issue. (CVE-2026-25997)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer     overread in `freerdp_image_copy_from_icon_data()` (libfreerdp/codec/color.c) can be triggered by crafted     RDP Window Icon (TS_ICON_INFO) data. The bug is reachable over the network when a client processes icon     data from an RDP server (or from a man-in-the-middle). Version 3.23.0 fixes the issue. (CVE-2026-26271)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0,     `rail_window_free` dereferences a freed `xfAppWindow` pointer during `HashTable_Free` cleanup because     `xf_rail_window_common` calls `free(appWindow)` on title allocation failure without first removing the     entry from the `railWindows` hash table, leaving a dangling pointer that is freed again on disconnect.
    Version 3.23.0 fixes the vulnerability. (CVE-2026-26986)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a missing bounds     check in `smartcard_unpack_read_size_align()` (`libfreerdp/utils/smartcard_pack.c:1703`) allows a     malicious RDP server to crash the FreeRDP client via a reachable `WINPR_ASSERT` - `abort()`. The crash     occurs in upstream builds where `WITH_VERBOSE_WINPR_ASSERT=ON` (default in FreeRDP 3.22.0 / current WinPR     CMake defaults). Smartcard redirection must be explicitly enabled by the user (e.g., `xfreerdp     /smartcard`; `/smartcard-logon` implies `/smartcard`). Version 3.23.0 fixes the issue. (CVE-2026-27015)

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function     `Stream_EnsureCapacity` can create an endless blocking loop. This may affect all client and server     implementations using `FreeRDP`. For practical exploitation this will only work on 32bit systems where the     available physical memory is `>= SIZE_MAX`. Version 3.23.0 contains a patch. No known workarounds are     available. (CVE-2026-27951)

    A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). The     `gdi_surface_bits()` function, which processes `SURFACE_BITS_COMMAND` messages, does not properly validate     image dimensions (`bmp.width` and `bmp.height`) provided by a malicious RDP server. This can lead to a     heap buffer overflow during bitmap decoding and memory operations. A remote attacker could exploit this to     overwrite adjacent memory, potentially resulting in arbitrary code execution. (CVE-2026-31806)

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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-6340 advisory.

    [2:2.11.7-1.5]
    - Fix use of nsc_process_message       Resolves: RHEL-155993

    [2:2.11.7-1.4]
    - Backport several CVE fixes       Resolves: RHEL-148046, RHEL-148049, RHEL-148054, RHEL-148061, RHEL-148079       Resolves: RHEL-148094, RHEL-148096, RHEL-148104, RHEL-148939, RHEL-149029       Resolves: RHEL-149042, RHEL-149065, RHEL-155993

Tenable has extracted the preceding description block directly from the Oracle Linux 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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:6340 advisory.

    FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license.
    The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

    Security Fix(es):

    * freerdp: FreeRDP heap-use-after-free (CVE-2026-22856)

    * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854)

    * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852)

    * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732)

    * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676)

    * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491)

    * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948)

    * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684)

    * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681)

    * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683)

    * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679)

    * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675)

    * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages     (CVE-2026-31806)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1160-1 advisory.

    - CVE-2026-26271: Buffer Overread in FreeRDP Icon Processing (bsc#1258979).
    - CVE-2026-26955: Out-of-bounds Write in freerdp (bsc#1258982).
    - CVE-2026-26965: Out-of-bounds Write in freerdp (bsc#1258985).
    - CVE-2026-31806: improper validation of server messages can lead to a heap buffer overflow and arbitrary     code execution       (bsc#1259653).
    - CVE-2026-31883: crafted RDPSND audio format and wave data can cause a heap buffer overflow write     (bsc#1259679).
    - CVE-2026-31885: unchecked predictor can lead to an out-of-bounds read (bsc#1259686).

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 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, the gdi_surface_bits()     function processes SURFACE_BITS_COMMAND messages sent by the RDP server. When the command is handled using     NSCodec, the bmp.width and bmp.height values provided by the server are not properly validated against the     actual desktop dimensions. A malicious RDP server can supply crafted bmp.width and bmp.height values that     exceed the expected surface size. Because these values are used during bitmap decoding and memory     operations without proper bounds checking, this can lead to a heap buffer overflow. Since the attacker can     also control the associated pixel data transmitted by the server, the overflow may be exploitable to     overwrite adjacent heap memory. This vulnerability is fixed in 3.24.0. (CVE-2026-31806)

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

ID	Name	Product	Family	Severity
304936	Fedora 42 : freerdp (2026-07418a381f)	Nessus	Fedora Local Security Checks	critical
304870	MiracleLinux 9 : freerdp-2.11.7-1.el9_7.5 (AXSA:2026-397:10)	Nessus	Miracle Linux Local Security Checks	critical
304739	AlmaLinux 9 : freerdp (ALSA-2026:6340)	Nessus	Alma Linux Local Security Checks	critical
304637	SUSE SLED15 / SLES15 Security Update : freerdp2 (SUSE-SU-2026:1164-1)	Nessus	SuSE Local Security Checks	critical
304636	SUSE SLES12 Security Update : freerdp (SUSE-SU-2026:1165-1)	Nessus	SuSE Local Security Checks	critical
304607	Amazon Linux 2023 : freerdp, freerdp-devel, freerdp-libs (ALAS2023-2026-1512)	Nessus	Amazon Linux Local Security Checks	critical
304573	Amazon Linux 2 : freerdp, --advisory ALAS2-2026-3221 (ALAS-2026-3221)	Nessus	Amazon Linux Local Security Checks	critical
304563	Oracle Linux 9 : freerdp (ELSA-2026-6340)	Nessus	Oracle Linux Local Security Checks	critical
304546	RHEL 9 : freerdp (RHSA-2026:6340)	Nessus	Red Hat Local Security Checks	critical
304493	SUSE SLES15 / openSUSE 15 Security Update : freerdp (SUSE-SU-2026:1160-1)	Nessus	SuSE 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
302239	Linux Distros Unpatched Vulnerability : CVE-2026-31806	Nessus	Misc.	critical

Detections

Analytics

CVE-2026-31806

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Tenable Plugins

Coming Soon

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