Reliance on Cookies without Validation and Integrity Checking in FortiWeb - CVE-2025-64447
Published: December 9, 2025 / Updated: December 18, 2025
Vulnerability identifier: #VU119441
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-64447
CWE-ID: CWE-565
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
FortiWeb
FortiWeb
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to reliance on cookies without validation and integrity checking. An unauthenticated attacker can execute arbitrary operations on the system via crafted HTTP or HTTPS request via forged cookies requiring knowledge of the FortiWeb serial number.
How to mitigate CVE-2025-64447
Install updates from vendor's website.