CVE-2026-109940

Updated on 13 Oct 2026

Severity

4.6 Medium severity

Details

CVSS score
4.6
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Overview

About vulnerability

FreeRDP 3.0.0-beta1 before 3.32.0 on Unix builds with PKCS#11 support has a stack-based buffer overflow in wprintKeyName() in WinPR’s NCrypt PKCS#11 provider. It hex-encodes a key’s CKA_ID, which can be up to 64 bytes, into a fixed 128-byte stack buffer. An attacker supplying a malicious PKCS#11 token or module whose key and matching certificate use a 55- to 64-byte CKA_ID can overflow the client’s stack during key enumeration, causing a crash.

Details