What is CVE-2026-109254?

CVE-2026-109254 is a medium-severity vulnerability in Freerdp, classified under Use After Free. CVSS score: 5.9/10. Published 2026-10-12.

How severe is CVE-2026-109254?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Use After Free in Freerdp

CVE-2026-109254

FreeRDP 2.1.0 before 3.32.0 contains a use-after-free vulnerability in the static rdpsnd channel disconnect path, which frees audio formats and device without joining play_thread. A malicious RDP server can disconnect while asynchronous Wave2 playback processes queued PDUs, causing the client to read freed heap memory and crash.

Vulnerability class: Use-After-Free

Published 2026-10-12.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Freerdp

Weakness classification (CWE)

CWE-416 — Use After Free

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vqxm-9w7c-hvvx (vendor-advisory)
www.vulncheck.com/advisories/freerdp-2.1.0-before-3.32.0-use-after-free-via-rdp… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109254?: CVE-2026-109254 is a medium-severity vulnerability in Freerdp, classified under Use After Free. CVSS score: 5.9/10. Published 2026-10-12.
How severe is CVE-2026-109254?: Medium severity. CVSS v3 base score is 5.9 out of 10.