CISA Alerts Agencies to Exploited WatchGuard Firewall Flaw
🔔 CISA has warned federal agencies to patch a critical, actively exploited vulnerability in WatchGuard Firebox firewalls that permits remote code execution through an out-of-bounds write in Fireware OS 11.x (EOL), 12.x, and 2025.1. The agency added CVE-2025-9242 to its Known Exploited Vulnerabilities catalog and imposed a three-week remediation deadline under BOD 22-01. WatchGuard released patches on September 17 but only marked the flaw as exploited on October 21. Internet scans tracked over 75,000 vulnerable appliances before counts fell to roughly 54,000.
