CVE-2026-91955
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Sep 15, 2026
Vendor
unknown
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.