FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap use-after-free occurs in irp_thread_func because the IRP is freed by irp->Complete() and then accessed again on the error path. 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-2026:0345-1 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 heap use-after-free     occurs in irp_thread_func because the IRP is freed by irp->Complete() and then accessed again on the error     path. This vulnerability is fixed in 3.20.1. (CVE-2026-22857)

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

ID	Name	Product	Family	Severity
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
284706	Linux Distros Unpatched Vulnerability : CVE-2026-22857	Nessus	Misc.	high

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CVE-2026-22857

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