people · May 20, 2026
Fortinet Patches Vulnerabilities in FortiOS-Based Appliances on May 18, 2026
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Fortinet released patches on May 18, 2026, for vulnerabilities affecting FortiOS-based security appliances including FortiGate firewalls and FortiProxy. The patches address authentication bypass and OS command injection class flaws. Fortinet has a documented history of rapid post-disclosure exploitation and multiple recent CISA KEV entries. FortiGate firewalls and FortiProxy appliances sit at the perimeter of enterprise and government networks. Users are advised to apply patches immediately to affected FortiOS versions.
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