CVE-2026-22852 MEDIUM

CVE-2026-22852: FreeRDP has a heap-buffer-overflow in audin_process_formats

Vendor Freerdp
Product FreeRDP
Weakness CWE-787
Published January 14, 2026
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

6.8/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 14, 2026 CVE published
February 26, 2026 Record updated