CVE-2026-109254 FreeRDP 2.1.0 before 3.32.0 Use-After-Free via rdpsnd Disconnect Path
A malicious RDP server can trigger a use-after-free in FreeRDP during audio disconnect, causing the client to crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-109254?
CVE-2026-109254 is a medium-severity use after free vulnerability in FreeRDP, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-416
Which versions are affected by CVE-2026-109254?
How do I fix CVE-2026-109254?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-109254 being exploited?
There is no known exploitation of CVE-2026-109254 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-109254, GHSA-qmqf-2qmq-qw2p, GHSA-vqxm-9w7c-hvvx, UBUNTU-CVE-2026-109254.