Active Exploitation of Fortinet FortiWeb Path Traversal Vulnerability (CVE-2025-64446)

A critical path traversal vulnerability in Fortinet FortiWeb, tracked as CVE-2025-64446, is being actively exploited in the wild. The flaw allows unauthenticated attackers to execute administrative commands on affected FortiWeb appliances by abusing the management API to reach internal endpoints. GreyNoise observed weaponization of this vulnerability within 72 hours of its disclosure, with coordinated scanning activity originating from multiple IPs and hosting providers, indicating a rapid and organized exploitation effort. The vulnerability affects FortiWeb versions 7.0 through 8.0, and exploit attempts have been detected using uniform TLS fingerprints, suggesting the use of automated tools.

CISA added CVE-2025-64446 to its Known Exploited Vulnerabilities (KEV) catalog, mandating federal agencies to patch the flaw within a specified deadline. Another FortiWeb zero-day, CVE-2025-58034, was also disclosed and patched, but CVE-2025-64446 is noted as the more critical issue due to its unauthenticated attack vector and higher CVSS score. Security researchers emphasize the urgency of patching FortiWeb appliances to prevent unauthorized access and potential compromise, as exploitation is ongoing and targeting a broad range of organizations.