Unrated severityOSV Advisory· Published Jan 14, 2026· Updated Feb 26, 2026
FreeRDP has a heap-buffer-overflow in audin_process_formats
CVE-2026-22852
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input (AUDIN) format lists. audin_process_formats reuses callback->formats_count across multiple MSG_SNDIN_FORMATS PDUs and writes past the newly allocated formats array, causing memory corruption and a crash. This vulnerability is fixed in 3.20.1.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/FreeRDP/FreeRDP/releases/tag/3.20.1mitrex_refsource_MISC
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9chc-g79v-4qq4mitrex_refsource_CONFIRM
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