CVE-2026-91955 [HIGH] – FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight val

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.