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CISA Orders 7-Day Fix for New FortiWeb Zero-Day Exploited in the Wild

CISA set a November 25 deadline under BOD 22-01 following confirmation of active exploitation of a newly patched FortiWeb flaw.

Overview

  • The newly added CVE-2025-58034 is an OS command injection in Fortinet FortiWeb that lets authenticated attackers execute unauthorized code via crafted HTTP requests or CLI commands.
  • CISA placed CVE-2025-58034 on its Known Exploited Vulnerabilities list and gave federal civilian agencies until November 25 to patch, citing ongoing attacks and a reduced remediation window.
  • An earlier FortiWeb issue, CVE-2025-64446, enables unauthenticated administrative command execution; CISA set a November 21 patch deadline after Fortinet initially shipped a silent fix on October 28.
  • Fortinet released updates for affected FortiWeb branches and advises disabling internet-facing management access and reviewing logs for unauthorized administrator accounts such as “Testpoint” or “trader.”
  • Trend Micro credited researcher Jason McFadyen with reporting CVE-2025-58034, and the company says it has observed around 2,000 detections tied to exploitation attempts.