Low severity3.1NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026

CVE-2026-121411

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 products

Freerdp/Freerdpllm-fuzzy
Range: <3.32.2

Patches

Vulnerability mechanics

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wffv-rjv2-h2x2nvdVendor Advisory
www.vulncheck.com/advisories/freerdp-before-3.32.2-x11-client-abort-via-rdpgfx-scaled-output-geometrynvdThird Party Advisory

News mentions

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cvss	0.202
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000