Zero-day vulnerability in FortiWeb

Path traversal
CVE-2025-64446

Vulnerability details

Advisory: SB20251114107 - Unauthenticated path traversal in FortiWeb

Vulnerable component: FortiWeb

CVE-ID: CVE-2025-64446

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Description:

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and execute arbitrary commands on the system.

Note, the vulnerability is being actively exploited in the wild.

External links:

https://www.fortiguard.com/psirt/FG-IR-25-910

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.