CVE-2026-22857

Publication date 14 January 2026

Last updated 10 November 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap use-after-free occurs in irp_thread_func because the IRP is freed by irp->Complete() and then accessed again on the error path. This vulnerability is fixed in 3.20.1.

Status

Package Ubuntu Release Status
freerdp 26.10 stonking Not in release
26.04 LTS resolute Not in release
25.10 questing Not in release
25.04 plucky 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 26.10 stonking Not in release
26.04 LTS resolute Not in release
25.10 questing Not in release
25.04 plucky Ignored end of life, was needs-triage
24.04 LTS noble
Not affected
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
freerdp3 26.10 stonking
Fixed in 3.20.2+dfsg-1
26.04 LTS resolute
Fixed in 3.20.2+dfsg-1
25.10 questing
Fixed in 3.16.0+dfsg-2ubuntu0.3
25.04 plucky Ignored end of life, was needs-triage
24.04 LTS noble
Fixed in 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
freerdp3

Severity score breakdown

CVSS version:

Base score 6.8 · Medium

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

Base score 9.8 · Critical

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

References

Related Ubuntu Security Notices (USN)

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

Other references

Access our resources on patching vulnerabilities