CVE-2026-55191

A flaw was found in FreeRDP. FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend are vulnerable to a heap-buffer-overflow. A malicious Remote Desktop Protocol RDP server can supply crafted surface dimensions, causing an undersized buffer to be allocated. This can lead to a...

CVE-2026-55192

In FreeRDP prior to 3.27.0, H.264 decoder backends return YUV planes sized from the bitstream without comparing decoded dimensions to the RDPGFX surface size. A malicious RDP server can supply a smaller AVC420/AVC444 frame, causing out-of-bounds reads in yuv420_context_decode/avc420_yuv_to_rgb pa...

CVE-2026-55191 FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191 FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191

FreeRDP clients prior to 3.27.0 are vulnerable to a heap-buffer-overflow write in the RDPGFX AVC444 codec path. In libfreerdp/codec/h264.c, the function avc444_ensure_buffer() computes the intermediate YUV444 buffer size using 32-bit multiplication (piDstStride[x] * padDstHeight). A malicious RDP...

EUVD-2026-62660

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

Astra Linux – Vulnerability in freerdp3

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, in ClearCodec, when glyphData was present, cleardecompress called freerdpimagecopynooverlap without validating the destination rectangle. This allowed out-of-bounds read/writing through crafted RDPGFX surfac...

Astra Linux – Vulnerability in freerdp3

FreeRDP is a free implementation of the Remote Desktop Protocol. Versions on the 2.x branch prior to 2.11.8, as well as versions on the 3.x branch prior to 3.23.0, have a out-of-bounds read vulnerability in the FreeRDP client’s RDPGFX channel. This vulnerability allows a malicious RDP server to...

CVE-2026-67306 FreeRDP before 3.29.0 Out-of-Bounds Read via Planar RLE

FreeRDP versions 3.28.0 and earlier contain an out-of-bounds read vulnerability in the RDP6 planar RLE bitmap decoder functions planardecompressplanerle and planardecompressplanerleonly in libfreerdp/codec/planar.c. Only the 1-byte control byte is bounds-checked; the subsequent 0–15...

RLSA-2026:36203 Important: freerdp security update

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 Fixes: freerdp: FreeRDP: Remote code execution via heap-buffer-overflow in...

Vulnerability of the gdi_CreateSurface() function in RDP clients of FreeRDP, allowing attackers to execute arbitrary code and cause service interruptions.

The vulnerability of the gdiCreateSurface function in the RDP client FreeRDP is related to buffer overflow in dynamic memory. Exploiting this vulnerability allows a remote attacker to execute arbitrary code and cause a service failure by sending specially crafted RDPGFX packets...

CVE-2026-44421

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs. The bug is in gdiCacheToSurface: it validates a destination rectangle that is clamped to UINT16MA...

Astra Linux – Vulnerability in freerdp2

FreeRDP is a set of free and open-source remote desktop protocol libraries and clients. In affected versions, an integer overflow in the freerdpbitmapplanarcontext function leads to a heap-buffer overflow. This affects FreeRDP-based clients. FreeRDP-based server implementations and proxies are no...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: freerdp (UTSA-2026-007177)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007177 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...

Linux Distros Unpatched Vulnerability : CVE-2026-25941

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. 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...

CVE-2026-26955 FreeRDP has Out-of-bounds Write

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a malicious RDP server can trigger a heap buffer overflow in FreeRDP clients using the GDI surface pipeline e.g., xfreerdp by sending an RDPGFX ClearCodec surface command with an out-of-bounds destination...

CVE-2026-25941

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...

UBUNTU-CVE-2026-25941

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...

CVE-2026-25941 FreeRDP: vuln_1_15_1 RDPGFX WIRE_TO_SURFACE_2 Out-of-Bounds Read

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...

CVE-2026-25941

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...