FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input (AUDIN) format lists. audin_process_formats reuses callback->formats_count across multiple MSG_SNDIN_FORMATS PDUs and writes past the newly allocated formats array, causing memory corruption and a crash. This vulnerability is fixed in 3.20.1.

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-2026:0449-1 advisory.

    - CVE-2026-22852: a  malicious RDP server can trigger a heap-buffer-overflow in audin_process_formats     (bsc#1256718).
    - CVE-2026-22854: server-controlled read length is used to read file data into an IRP output can cause       heap-buffer-overflow in drive_process_irp_read (bsc#1256720).
    - CVE-2026-22856: race condition in the serial channel IRP thread tracking can cause heap-use-after-free       in create_irp_thread(bsc#1256722).
    - CVE-2026-22859: improper bound check can lead to heap-buffer-overflow in urb_select_configuration     (bsc#1256725).
    - CVE-2026-23530: improper validation can lead to heap buffer overflow in `planar_decompress_plane_rle`     (bsc#1256940).
    - CVE-2026-23531: improper validation in `clear_decompress` can lead to heap buffer overflow     (bsc#1256941).
    - CVE-2026-23532: mismatch between destination rectangle clamping and the actual copy size can lead to a     heap buffer       overflow in `gdi_SurfaceToSurface` (bsc#1256942).
    - CVE-2026-23534: missing checks can lead to heap buffer overflow in `clear_decompress_bands_data`     (bsc#1256944).

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 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0417-1 advisory.

    - CVE-2026-22852: a  malicious RDP server can trigger a heap-buffer-overflow in audin_process_formats     (bsc#1256718).
    - CVE-2026-22854: server-controlled read length is used to read file data into an IRP output can cause       heap-buffer-overflow in drive_process_irp_read (bsc#1256720).
    - CVE-2026-22856: race condition in the serial channel IRP thread tracking can cause heap-use-after-free       in create_irp_thread(bsc#1256722).
    - CVE-2026-22859: improper bound check can lead to heap-buffer-overflow in urb_select_configuration     (bsc#1256725).
    - CVE-2026-23530: improper validation can lead to heap buffer overflow in `planar_decompress_plane_rle`     (bsc#1256940).
    - CVE-2026-23531: improper validation in `clear_decompress` can lead to heap buffer overflow     (bsc#1256941).
    - CVE-2026-23532: mismatch between destination rectangle clamping and the actual copy size can lead to a     heap buffer       overflow in `gdi_SurfaceToSurface` (bsc#1256942).
    - CVE-2026-23534: missing checks can lead to heap buffer overflow in `clear_decompress_bands_data`     (bsc#1256944).

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-2026:0421-1 advisory.

    - CVE-2026-22852: a malicious RDP server can trigger a heap-buffer-overflow in audin_process_formats     (bsc#1256718).
    - CVE-2026-22854: server-controlled read length is used to read file data into an IRP output can cause       heap-buffer-overflow in drive_process_irp_read (bsc#1256720).
    - CVE-2026-22856: race condition in the serial channel IRP thread tracking can cause heap-use-after-free       in create_irp_thread(bsc#1256722).
    - CVE-2026-22859: improper bound check can lead to heap-buffer-overflow in urb_select_configuration     (bsc#1256725).
    - CVE-2026-23530: improper validation can lead to heap buffer overflow in `planar_decompress_plane_rle`     (bsc#1256940).
    - CVE-2026-23531: improper validation in `clear_decompress` can lead to heap buffer overflow     (bsc#1256941).
    - CVE-2026-23532: mismatch between destination rectangle clamping and the actual copy size can lead to a     heap buffer       overflow in `gdi_SurfaceToSurface` (bsc#1256942).
    - CVE-2026-23534: missing checks can lead to heap buffer overflow in `clear_decompress_bands_data`     (bsc#1256944).

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-2026:0345-1 advisory.

    - CVE-2025-4478: Fixed initialization of function pointers after       resource allocations (bsc#1243109)
    - CVE-2026-22851: Fixed RDPGFX ResetGraphics race leading to       use-after-free in SDL client (sdl->primary) (bsc#1256717)
    - CVE-2026-22852: Fixed heap-buffer-overflow in audin_process_formats       (bsc#1256718)
    - CVE-2026-22853: Fixed heap-buffer-overflow in ndr_read_uint8Array       (bsc#1256719)
    - CVE-2026-22854: Fixed heap-buffer-overflow in drive_process_irp_read       (bsc#1256720)
    - CVE-2026-22855: Fixed heap-buffer-overflow in smartcard_unpack_set_attrib_call       (bsc#1256721)
    - CVE-2026-22856: Fixed heap-use-after-free in create_irp_thread (bsc#1256722)
    - CVE-2026-22857: Fixed heap-use-after-free in irp_thread_func (bsc#1256723)
    - CVE-2026-22858: Fixed global-buffer-overflow in crypto_base64_devoce       (bsc#1256724)
    - CVE-2026-22859: Fixed heap-buffer-overflow in urb_select_configuration       (bsc#1256725)
    - CVE-2026-23530: Fixed improper validation leading to heap buffer overflow       in `planar_decompress_plane_rle` (bsc#1256940)
    - CVE-2026-23531: Fixed improper validation in `clear_decompress` leading to       heap buffer overflow (bsc#1256941)
    - CVE-2026-23532: Fixed mismatch between destination rectangle clamping and       the actual copy size leading to heap buffer overflow in       `gdi_SurfaceToSurface` (bsc#1256942)
    - CVE-2026-23533: Fixed improper validation leading to heap buffer overflow in       `clear_decompress_residual_data` (bsc#1256943)
    - CVE-2026-23534: Fixed missing checks leading to heap buffer overflow in       `clear_deceompress_bands_data` (bsc#1256944)
    - CVE-2026-23732: Fixed improper validation leading to heap buffer overflow in       `Glyph_alloc` (bsc#1256945)
    - CVE-2026-23883: Fixed use-after-free when `update_pointer_color` and       `freerdp_image_copy_fromPointer_data` fail (bsc#1256946)
    - CVE-2026-23884: Fixed use-after-free in `gdi_set_bounds` (bsc#1256947)

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 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a193f1698f advisory.

    Update to 3.20.2




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 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-79f923d917 advisory.

    Update to 3.20.2




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 3.20.1, a malicious RDP server     can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input (AUDIN) format     lists. audin_process_formats reuses callback->formats_count across multiple MSG_SNDIN_FORMATS PDUs and     writes past the newly allocated formats array, causing memory corruption and a crash. This vulnerability     is fixed in 3.20.1. (CVE-2026-22852)

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

ID	Name	Product	Family	Severity
298750	SUSE SLED15 / SLES15 Security Update : freerdp2 (SUSE-SU-2026:0449-1)	Nessus	SuSE Local Security Checks	high
298604	SUSE SLES15 / openSUSE 15 Security Update : freerdp (SUSE-SU-2026:0417-1)	Nessus	SuSE Local Security Checks	high
298603	SUSE SLES15 Security Update : freerdp (SUSE-SU-2026:0421-1)	Nessus	SuSE Local Security Checks	high
297418	SUSE SLED15 / SLES15 Security Update : freerdp (SUSE-SU-2026:0345-1)	Nessus	SuSE Local Security Checks	high
294816	Fedora 42 : freerdp (2026-a193f1698f)	Nessus	Fedora Local Security Checks	high
291266	Fedora 43 : freerdp (2026-79f923d917)	Nessus	Fedora Local Security Checks	high
284679	Linux Distros Unpatched Vulnerability : CVE-2026-22852	Nessus	Misc.	high

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CVE-2026-22852

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