Breaking: FortiGate Zero-Day Crisis - 48,000 Devices at Risk and How to Respond
· 8 min read
On January 14, 2025, Fortinet disclosed CVE-2024-55591, a critical authentication bypass vulnerability affecting thousands of FortiGate firewalls worldwide. With active exploitation since November 2024 and 48,000 internet-facing devices at risk, this represents one of the most severe infrastructure vulnerabilities of early 2025. This emergency guide provides technical analysis, detection methods, and immediate response actions.