CVE-2025-64471: Fortinet FortiWeb

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A use of password hash instead of password for authentication vulnerability [CWE-836] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through 7.4.10, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an unauthenticated attacker to use the hash in place of the password to authenticate via crafted HTTP/HTTPS requests

Affected products

• Fortinet FortiWeb: from 7.0.0, up to and including 7.0.11; from 7.2.0, up to and including 7.2.11; from 7.4.0, up to and including 7.4.10; from 7.6.0, up to and including 7.6.4; from 8.0.0, up to and including 8.0.1

Published 2025-12-09. Last modified 2026-09-25.