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Jan 23 2026 Fortinet admits FortiGate SSO bug still exploitable despite December patch

Source

Fix didn't quite do the job – attackers spotted logging in Fortinet has confirmed that attackers are actively bypassing a December patch for a critical FortiCloud single sign-on (SSO) authentication flaw after customers reported suspicious logins on devices supposedly fully up to date.... [...]

Posted by Carly Page on Fri 23 January 2026 in The Register.

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