CVE-2026-121963FreeRDP before 3.32.2 Use-After-Free via Dynamic rdpsnd Channel Close

Description

FreeRDP before 3.32.2 contains a use-after-free vulnerability in the asynchronous dynamic rdpsnd channel that allows malicious RDP servers to trigger freed callback access by closing the channel with queued audio PDUs. Attackers can send a training PDU then close the channel so the playback thread reads the freed callback in rdpsnd_virtual_channel_write, crashing the client.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• GitHub Security Advisory (GHSA-cx9c-q4jc-wm6c) vendor-advisoryExploitVendor Advisory
• VulnCheck Advisory: FreeRDP before 3.32.2 Use-After-Free via Dynamic rdpsnd Channel Close third-party-advisoryThird Party Advisory