CVE-2026-23884

Publication date 19 January 2026

Last updated 30 June 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.6 · High

Score breakdown

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, offscreen bitmap deletion leaves `gdi->drawing` pointing to freed memory, causing UAF when related update packets arrive. A malicious server can trigger a client‑side use after free, 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 26.04 LTS resolute Not in release
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 26.04 LTS resolute Not in release
25.10 questing Not in release
24.04 LTS noble Ignored changes too intrusive
22.04 LTS jammy Ignored changes too intrusive
20.04 LTS focal Ignored changes too intrusive
18.04 LTS bionic Ignored changes too intrusive
freerdp3 26.04 LTS resolute
Not affected
25.10 questing
Fixed 3.16.0+dfsg-2ubuntu0.3
24.04 LTS noble
Fixed 3.5.1+dfsg1-0ubuntu1.4
22.04 LTS jammy Not in release

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

Severity score breakdown

CVSS version:

Base score 7.7 · High

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

Base score 7.6 · High

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-8105-1
    • FreeRDP vulnerabilities
    • 18 March 2026

Other references

Access our resources on patching vulnerabilities