Out-of-bounds Write Affecting freerdp-debugsource package, versions <2:3.10.3-12.el10_2.6


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
1.06% (64th percentile)

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  • Snyk IDSNYK-CENTOS10-FREERDPDEBUGSOURCE-17882825
  • published8 Jul 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

CVE-2026-40033  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Centos:10 freerdp-debugsource to version 2:3.10.3-12.el10_2.6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-debugsource package and not the freerdp-debugsource package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

FreeRDP before 3.26.0 contains a heap-buffer-overflow vulnerability in gdi_CacheToSurface that allows remote attackers to write out-of-bounds heap memory. The vulnerability occurs because rectangle validation clamps coordinates to UINT16_MAX but performs copy operations using unclamped cache entry dimensions, enabling malicious RDP servers to trigger large out-of-bounds writes and potentially achieve remote code execution or client crash.

CVSS Base Scores

version 3.1