freerdp: FreeRDP: Denial of Service and potential code execution via client-side heap buffer overflow

A flaw was found in FreeRDP. A malicious server can exploit a client-side heap buffer overflow vulnerability in the gdiSurfaceToSurface path. This vulnerability, caused by a mismatch in memory handling, can lead to a crash Denial of Service of the client application. Furthermore, it carries a ris...

Security update for freerdp

This update for freerdp fixes the following issues: CVE-2025-4478: Fixed initialization of function pointers after resource allocations bsc1243109 CVE-2026-22851: Fixed RDPGFX ResetGraphics race leading to use-after-free in SDL client sdl-primary bsc1256717 CVE-2026-22852: Fixed...

Vulnerability of the gdi_set_bounds() function in the RDP client of FreeRDP, allowing a hacker to execute arbitrary code and cause a service failure

The vulnerability of the gdisetbounds function in the RDP client of FreeRDP is related to the possibility of using memory after it is freed. Exploiting this vulnerability could allow a remote attacker to execute arbitrary code and cause service failure...

Vulnerability of the gdi_SurfaceToSurface() function in the RDP client of FreeRDP, allowing a hacker to execute arbitrary code and cause service failure

The vulnerability of the gdiSurfaceToSurface 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 service interruptions...

SUSE CVE-2026-23532

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the FreeRDP client's gdiSurfaceToSurface path due to a mismatch between destination rectangle clamping and the actual copy size. A malicious server can trigger a...

CVE-2026-23884

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, offscreen bitmap deletion leaves gdi-drawing pointing to freed memory, causing UAF when related update packets arrive. A malicious server can trigger a client‑side use after free, causing a crash DoS and...

CVE-2026-23884

Summary: CVE-2026-23884 affects FreeRDP prior to 3.21.0, where offscreen bitmap deletion can leave gdi->drawing pointing to freed memory, enabling a client-side use-after-free that may crash the client (DoS) and cause heap corruption depending on allocator/heap layout. The issue is addressed i...

CVE-2026-23884 Heap-use-after-free in gdi_set_bounds

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, offscreen bitmap deletion leaves gdi-drawing pointing to freed memory, causing UAF when related update packets arrive. A malicious server can trigger a client‑side use after free, causing a crash DoS and...

CVE-2026-23884 Heap-use-after-free in gdi_set_bounds

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, offscreen bitmap deletion leaves gdi-drawing pointing to freed memory, causing UAF when related update packets arrive. A malicious server can trigger a client‑side use after free, causing a crash DoS and...

CVE-2026-23532 FreeRDP has heap-buffer-overflow in gdi_SurfaceToSurface

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the FreeRDP client’s gdiSurfaceToSurface path due to a mismatch between destination rectangle clamping and the actual copy size. A malicious server can trigger a...

CVE-2026-23532

CVE-2026-23532 affects the FreeRDP client prior to version 3.21.0, where a heap buffer overflow can be triggered in the FreeRDP client’s gdi_SurfaceToSurface path due to a mismatch between destination rectangle clamping and the actual copy size. This can lead to a crash (DoS) and potential heap c...

EUVD-2026-3316

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the FreeRDP client’s gdiSurfaceToSurface path due to a mismatch between destination rectangle clamping and the actual copy size. A malicious server can trigger a...

CVE-2026-23532 FreeRDP has heap-buffer-overflow in gdi_SurfaceToSurface

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the FreeRDP client’s gdiSurfaceToSurface path due to a mismatch between destination rectangle clamping and the actual copy size. A malicious server can trigger a...

CVE-2026-23532

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the FreeRDP client’s gdiSurfaceToSurface path due to a mismatch between destination rectangle clamping and the actual copy size. A malicious server can trigger a...

CVE-2026-23532

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the FreeRDP client’s gdiSurfaceToSurface path due to a mismatch between destination rectangle clamping and the actual copy size. A malicious server can trigger a...

FreeRDP security vulnerabilities

FreeRDP is an open-source RDP protocol implementation developed by the FreeRDP team. Versions of FreeRDP prior to 3.21.0 contained security vulnerabilities. These vulnerabilities stemmed from a mismatch between the target rectangle limit in the gdiSurfaceToSurface path and the actual copied size,...

PT-2026-22017

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.23.0 Description A malicious RDP server can trigger a heap buffer overflow in FreeRDP clients using the GDI surface pipeline, such as xfreerdp. This occurs when sending an RDPGFX ClearCodec surface command with an...

PT-2026-25335

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.24.0 Description FreeRDP is an implementation of the Remote Desktop Protocol. The gdi surface bits function handles SURFACE BITS COMMAND messages from the RDP server. When using NSCodec, the bmp.width and bmp.height...

Patch Tuesday - November 2025

Microsoft is publishing 66 new vulnerabilities today, which is far fewer than we’ve come to expect in recent months. There’s a lone exploited-in-the-wild zero-day vulnerability, which Microsoft assesses as critical severity, although there’s apparently no public disclosure yet. Three critical...

Vulnerabilities fixed in Microsoft Windows

Microsoft has fixed vulnerabilities in Windows. A malicious party can exploit the vulnerabilities to carry out attacks that can lead to the following categories of damage: - Denial-of-Service - Execution of arbitrary code root/admin privileges - Accessing sensitive data - Obtaining elevated...