[ CVE-2026-121411 · Published 3 Nov 2026 ]

Vulnerability in FreeRDP

CVSS 3.1 EPSS <1%1 agency advisoryNo fix listed yet

[ Description ]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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

BSI CERT-Bund18 Oct 2026WID-SEC-2026-4015

FreeRDP: Multiple vulnerabilities allow denial of service Translated from German
Risk lowCVE-2026-121389CVE-2026-121411CVE-2026-121403+1 more CVEs

[ References ]References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wffv-rjv2-h2x2Vendor Advisory
www.vulncheck.com/advisories/freerdp-before-3.32.2-x11-client-abort-via-rdpgfx-scaled-o…Third Party Advisory

[ Description ]Official description

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

FreeRDP: Multiple vulnerabilities allow denial of service Translated from German

[ References ]References