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ALSA-2026:16019 — Moderate: freerdp security update

Affected: AlmaLinux:8: freerdp, AlmaLinux:8: freerdp-devel, AlmaLinux:8: freerdp-libs, AlmaLinux:8: libwinpr, AlmaLinux:8: libwinpr-devel

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: Denial of service due to use-after-free vulnerability (CVE-2026-25952) * freerdp: FreeRDP: Denial of Service via double free vulnerability during disconnect (CVE-2026-26986) * freerdp: FreeRDP: Denial of Service via endless blocking loop in Stream_EnsureCapacity (CVE-2026-27951) * freerdp: FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId (CVE-2026-29775) * freerdp: FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks (CVE-2026-31885) * freerdp: FreeRDP has a division-by-zero in ADPCM decoders when `nBlockAlign` is 0 (CVE-2026-31884) * freerdp: FreeRDP: Denial of Service via crafted audio data in RDP (CVE-2026-31883) * FreeRDP: FreeRDP: Information disclosure via heap memory out of bounds read (CVE-2026-33985)

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.

bdu:2026-04157

EUVD-2026-270795

fkie_cve-2026-27951

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.

OESA-2026-2439 — freerdp security update

Affected: openEuler:24.03-LTS-SP3: freerdp

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft&apos;s open specifications. This package provides the client applications xfreerdp. Security Fix(es):

A malicious server can trigger a client-side global buffer overflow, causing a crash (denial of service)(CVE-2026-25942)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a heap-use-after-free vulnerability exists in the X11 client backend. Specifically, the `xf_SetWindowMinMaxInfo` function dereferences a freed `xfAppWindow` pointer. This occurs because `xf_rail_get_window` within `xf_rail_server_min_max_info` returns an unprotected pointer from the `railWindows` hash table. The main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer, leading to a dangling pointer. A malicious server can exploit this to trigger a client-side crash (Denial of Service) and potentially cause heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25952)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the `xf_AppUpdateWindowFromSurface` function reads from a freed `xfAppWindow` object. This occurs 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 fast…

openSUSE-SU-2026:10611-1 — freerdp2-2.11.7-8.1 on GA media

freerdp2-2.11.7-8.1 on GA media

RHSA-2026:16483 — Red Hat Security Advisory: freerdp security update

freerdp: FreeRDP: Denial of service due to use-after-free vulnerability freerdp: FreeRDP: Denial of Service via double free vulnerability during disconnect freerdp: FreeRDP: Denial of Service via endless blocking loop in Stream_EnsureCapacity freerdp: FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId freerdp: FreeRDP: Denial of Service via crafted audio data in RDP freerdp: FreeRDP has a division-by-zero in ADPCM decoders when `nBlockAlign` is 0 freerdp: FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks FreeRDP: FreeRDP: Information disclosure via heap memory out of bounds read

SUSE-SU-2026:1632-1 — Security update for freerdp

Security update for freerdp

UBUNTU-CVE-2026-27951

Affected: Ubuntu:16.04:LTS: freerdp, Ubuntu:Pro:18.04:LTS: freerdp2, Ubuntu:18.04:LTS: freerdp, Ubuntu:Pro:20.04:LTS: freerdp2, Ubuntu:22.04:LTS: freerdp2, Ubuntu:24.04:LTS: freerdp3, Ubuntu:Pro:24.04:LTS: freerdp2, Ubuntu:25.10: freerdp3

WID-SEC-W-2026-0514 — FreeRDP: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in FreeRDP ausnutzen, um beliebigen Programmcode auszuführen, und um einen Denial of Service Angriff durchzuführen.