Fortinet Fixes Critical FortiSIEM Remote Code Flaw
🔒 Fortinet issued patches for a critical FortiSIEM vulnerability (CVE-2025-64155, CVSS 9.4) that permits unauthenticated OS command injection and remote code execution via the phMonitor service on TCP port 7900. The flaw enables argument injection leading to arbitrary file writes as admin and a cron-triggered escalation to root. Affected releases span 6.7–7.4 with fixed builds; 7.5 and FortiSIEM Cloud are not impacted. Apply vendor updates or restrict access to port 7900 as a temporary mitigation.
