What is GHSA-3hqr-g437-cr9w?

GHSA-3hqr-g437-cr9w is a security advisory published by GitHub Security Advisories with High severity. FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight values...

Which CVE IDs does GHSA-3hqr-g437-cr9w cover?

GHSA-3hqr-g437-cr9w covers the following CVE IDs: CVE-2026-91955. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-3hqr-g437-cr9w?

GHSA-3hqr-g437-cr9w has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-3hqr-g437-cr9wHighCVSS 7.5

FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight values...

Vendor

GitHub Security Advisories

Published

September 15, 2026

Last Modified

September 15, 2026

🔗 CVE IDs covered (1)

CVE-2026-91955 →

📋 Description

FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight values during GCC negotiation, allowing remote attackers to crash the server. Attackers can send crafted RDP packets with zero or oversized dimensions to trigger division-by-zero or assertion failures in multifragment update capability calculations, terminating the server process.

🔗 References (4)

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4464-r7qj-pgrx
https://nvd.nist.gov/vuln/detail/CVE-2026-91955
https://www.vulncheck.com/advisories/freerdp-before-3.31.0-denial-of-service-via-desktop-dimensions
https://github.com/advisories/GHSA-3hqr-g437-cr9w