SB2025120952 - Authentication bypass in FortiWeb
Published: December 9, 2025 Updated: December 18, 2025
Security Bulletin ID
SB2025120952
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Reliance on Cookies without Validation and Integrity Checking (CVE-ID: CVE-2025-64447)
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.
Remediation
Install update from vendor's website.