Vulnerability · Published Nov 3, 2026 · Assigned by VulnCheck

CVE-2026-121411FreeRDP before 3.32.2 X11 Client Abort via RDPGFX Scaled Output Geometry

Low 3.1

In plain English

A low-severity improper input validation in FreeRDP from FreeRDP. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.1Low

Exploit odds (30 days)0.2%top 86.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

FreeRDP before 3.32.2 fails to bound server-supplied target dimensions and output origin in RDPGFX MAPSURFACETOSCALEDOUTPUT PDUs, allowing malicious RDP servers to abort X11 clients. Attackers can map a surface to oversized scaled output, triggering checked UINT16 cast or freerdp_image_scale stride assertion failures that terminate the client.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	freerdp2	no fix listed	DEBIAN-CVE-2026-121411
Debian:13	freerdp3	no fix listed	DEBIAN-CVE-2026-121411
Debian:14	freerdp3	3.32.2+dfsg-1	DEBIAN-CVE-2026-121411
Ubuntu:22.04:LTS	freerdp2	no fix listed	UBUNTU-CVE-2026-121411
Ubuntu:24.04:LTS	freerdp3	no fix listed	UBUNTU-CVE-2026-121411
Ubuntu:26.04:LTS	freerdp3	no fix listed	UBUNTU-CVE-2026-121411
Ubuntu:26.10	freerdp3	no fix listed	UBUNTU-CVE-2026-121411

Affected products (as reported)

Vendor	Product	Versions
FreeRDP	FreeRDP	0 – before 3.32.2

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

References

GitHub Security Advisory (GHSA-wffv-rjv2-h2x2) vendor-advisory
VulnCheck Advisory: FreeRDP before 3.32.2 X11 Client Abort via RDPGFX Scaled Output Geometry third-party-advisory