CVE-2026-24684: FreeRDP has a Heap-use-after-free in play_thread

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-09 · updated 2026-06-17
Weakness: CWE-416

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, the RDPSND async playback thread can process queued PDUs after the channel is closed and internal state is freed, leading to a use after free in rdpsnd_treat_wave. This vulnerability is fixed in 3.22.0.

Affected products

FreeRDP: before 3.22.0 — fixed in 3.22.0

How to fix

Upgrade to a fixed version: FreeRDP 3.22.0. Check the vendor advisory for mitigations.

References

https://github.com/FreeRDP/FreeRDP/commit/622bb7b4402491ca003f47472d0e478132673696
https://github.com/FreeRDP/FreeRDP/commit/afa6851dc80835d3101e40fcef51b6c5c0f43ea5
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vcgv-xgjp-h83q

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