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Widespread Exploitation of Authentication Bypass in Fortinet Firewalls

Widespread Exploitation of Authentication Bypass in Fortinet Firewalls

First seen 23 Jan 2026, 22:10 UTC

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ThreatCluster AI
ThreatCluster March 12, 2026 at 13:27 UTC

An authentication bypass vulnerability in Fortinet Fortiweb firewalls is being exploited in widespread and ongoing attacks. The bug has not yet been assigned a CVE identifier, and the attacks are targeting security testing environments. This situation follows reports of a poorly patched bug being exploited in similar Fortinet products.

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