Heap-based Buffer Overflow Affecting freerdp package, versions <2:2.11.7-1.el9_6.7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.13% (33rd percentile)

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  • Snyk IDSNYK-RHEL9-FREERDP-15965343
  • published10 Apr 2026
  • disclosed19 Jan 2026

Introduced: 19 Jan 2026

CVE-2026-23732  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade RHEL:9 freerdp to version 2:2.11.7-1.el9_6.7 or higher.
This issue was patched in RHSA-2026:6727.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp package and not the freerdp package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, FastGlyph parsing trusts cbData/remaining length and never validates against the minimum size implied by cx/cy. A malicious server can trigger a client‑side global buffer overflow, causing a crash (DoS). Version 3.21.0 contains a patch for the issue.

CVSS Base Scores

version 3.1