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Widespread Exploitation of Authentication Bypass in Fortinet Firewalls

First seen 23 Jan 2026, 22:10 UTC • •34.3

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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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Updated 229d ago How this analysis works

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2 entities, 1 inferred relationships (STIX 2.1).

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Technique (1)

Zero-day Exploit

Organization (1)

Fortinet

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Zero-day Exploit related to Fortinet

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Widespread Exploitation of Authentication Bypass in Fortinet Firewalls

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