CVE-2026-121411

LOW 3.1

FreeRDP before 3.32.2 X11 Client Abort via RDPGFX Scaled Output Geometry

CVSS Score

3.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-20
Vendor	freerdp
Product	freerdp
Published	Nov 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

FreeRDP / FreeRDP

0 < 3.32.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wffv-rjv2-h2x2 vulncheck.com: https://www.vulncheck.com/advisories/freerdp-before-3.32.2-x11-client-abort-via-rdpgfx-scaled-output-geometry

Credits

Kushalkhemka mayank-jangid-moon opensec-intelligence