CVE-2026-23532

Publication date 19 January 2026

Last updated 3 February 2026

Ubuntu priority

Description

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 `gdi_SurfaceToSurface` path due to a mismatch between destination rectangle clamping and the actual copy size. 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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
freerdp	25.10 questing	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
freerdp2	25.10 questing	Not in release
	24.04 LTS noble	Fixed 2.11.5+dfsg1-1ubuntu0.1~esm3
	22.04 LTS jammy	Fixed 2.6.1+dfsg1-3ubuntu2.8
	20.04 LTS focal	Fixed 2.6.1+dfsg1-0ubuntu0.20.04.2+esm1
	18.04 LTS bionic	Fixed 2.2.0+dfsg1-0ubuntu0.18.04.4+esm3
freerdp3	25.10 questing	Vulnerable
	24.04 LTS noble	Vulnerable
	22.04 LTS jammy	Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
freerdp	Upstream: c4a7c37
freerdp2	Upstream: c4a7c37
freerdp3	Upstream: c4a7c37

References

Related Ubuntu Security Notices (USN)

USN-8004-1
FreeRDP vulnerabilities
3 February 2026