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Fortinet Confirms Active Exploitation of FortiCloud SSO Bypass Vulnerability

Gbhackers •Mayura Kathir • January 23, 2026

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Fortinet Confirms Exploitation of FortiCloud SSO Bypass Vulnerability Fortinet has confirmed that attackers are actively exploiting a vulnerability in FortiCloud's single sign-on (SSO) authentication, affecting even fully patched devices. The exploitation allows unauthorized access, with attackers bypassing security measures that were thought to be effective following a December patch. Organizations are advised to monitor their systems closely for suspicious activity. 35 sources 38

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Fortinet Confirms Active Exploitation of FortiCloud SSO Bypass Vulnerability

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