Heap-based Buffer Overflow Affecting freerdp package, versions <2:3.10.3-5.el10_1.1


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.1% (27th percentile)

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  • Snyk IDSNYK-CENTOS10-FREERDP-15036886
  • published20 Jan 2026
  • disclosed19 Jan 2026

Introduced: 19 Jan 2026

CVE-2026-23531  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Centos:10 freerdp to version 2:3.10.3-5.el10_1.1 or higher.

NVD Description

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

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, in ClearCodec, when glyphData is present, clear_decompress calls freerdp_image_copy_no_overlap without validating the destination rectangle, allowing an out-of-bounds read/write via crafted RDPGFX surface updates. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.

CVSS Base Scores

version 3.1