Fortinet 2025: Chained FortiWeb Flaws Enable Remote Code Execution and Privilege Escalation
In November 2025, Fortinet disclosed two critical vulnerabilities (CVE-2025-64446 and CVE-2025-58034) affecting multiple versions of its FortiWeb web application firewall. Exploited as a chained attack, the first flaw—relative path traversal—enabled unauthenticated attackers to execute administrative commands via crafted HTTP/HTTPS requests, while the second—OS command injection—allowed privilege escalation and execution of unauthorized code by authenticated users. Security agencies confirmed observed exploitation in the wild, with potential impact including network compromise, lateral movement, and loss of control over critical web applications. Fortinet and CISA urged immediate upgrades and review of affected deployments. This incident underscores a broader trend of adversaries targeting internet-facing security appliances as entry points, chaining vulnerabilities for deeper network access. The rapid inclusion of these CVEs in CISA’s Known Exploited Vulnerabilities catalog reflects the elevated urgency and broader risk to organizations across sectors relying on web application firewalls as a key security control.
Kill Chain