CVEvulnerability
CVE-2026-91955
8.2 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-15
- Last modified
- 2026-09-24
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 8.2 HIGH — CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-369
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.
Affected configurations
• freerdp freerdp (< 3.31.0)
Related
Weakness · CWE (1)
- CWE-369 Divide By Zero weakness
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4464-r7qj-pgrx Exploit, Vendor Advisory
- https://www.vulncheck.com/advisories/freerdp-before-3.31.0-denial-of-service-via-desktop-dimensions Exploit, Mitigation, Third Party Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4464-r7qj-pgrx Exploit, Vendor Advisory