Vulnerability · Published Nov 4, 2026 · Assigned by VulnCheck

CVE-2026-121955FreeRDP before 3.32.2 Use-After-Free in Smartcard Emulation ReleaseContext

High 7.5

In plain English

A high-severity use-after-free in FreeRDP from FreeRDP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.3%top 71.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

FreeRDP before 3.32.2 contains a use-after-free vulnerability in Emulate_SCardReleaseContext that frees the emulated SCardContext before its worker thread is cancelled and joined. A malicious server can send ESTABLISHCONTEXT, a long-timeout GETSTATUSCHANGE, then RELEASECONTEXT smartcard IRPs to corrupt heap memory or crash clients using smartcard emulation.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	freerdp2	no fix listed	DEBIAN-CVE-2026-121955
Debian:13	freerdp3	no fix listed	DEBIAN-CVE-2026-121955
Debian:14	freerdp3	3.32.2+dfsg-1	DEBIAN-CVE-2026-121955

Affected products (as reported)

Vendor	Product	Versions
FreeRDP	FreeRDP	0 – before 3.32.2

Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-983v-jp34-f3fm) vendor-advisory
VulnCheck Advisory: FreeRDP before 3.32.2 Use-After-Free in Smartcard Emulation ReleaseContext third-party-advisory