CVE-2026-23534

Publication date 19 January 2026

Last updated 3 February 2026

Ubuntu priority

Medium

Why this 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 ClearCodec bands decode path when crafted band coordinates allow writes past the end of the destination surface buffer. 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

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

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Patch details

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

Package Patch details
freerdp
freerdp2
freerdp3

References

Related Ubuntu Security Notices (USN)

    • USN-8004-1
    • FreeRDP vulnerabilities
    • 3 February 2026

Other references