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Fortinet has begun releasing security updates to address a critical flaw impacting FortiOS that has come under active exploitation in the wild
Fortinet has confirmed a new, actively exploited critical FortiCloud single sign-on (SSO) authentication bypass vulnerability, tracked as CVE-2026-24858, and says it has mitigated the zero-day attacks by blocking FortiCloud SSO connections from devices running vulnerable firmware versions. [...]
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.…
Fortinet has officially confirmed that it's working to completely plug a FortiCloud SSO authentication bypass vulnerability following reports of fresh exploitation activity on fully-patched firewalls
Days after admins began reporting that their fully patched firewalls are being hacked, Fortinet confirmed it's working to fully address a critical FortiCloud SSO authentication bypass vulnerability that should have already been patched since early December. [...]