Fortinet confirms active exploitation of a FortiCloud SSO authentication bypass affecting fully patched FortiGate devices via ...

Fortinet has confirmed a new, actively exploited critical FortiCloud single sign-on (SSO) authentication bypass vulnerability ...

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 ...

All SAML SSO implementations, including FortiCloud SSO, are vulnerable to authentication bypass and malicious configuration ...

The cybersecurity company pointed out that the fresh campaign resembles December 2025 attacks targeting CVE-2025-59718 and CVE-2025-59719, two critical-severity defects impacting the FortiCloud SSO ...

CISA added the flaw to its KEVs catalog as Fortinet warned that patches for most affected versions remain “upcoming,” even though vulnerable devices can no longer use cloud SSO until upgraded.

Fortinet released updates for an actively exploited FortiOS SSO authentication bypass flaw, CVE-2026-24858, now listed by CISA in KEV.

Fortinet has released security updates to address two critical vulnerabilities in FortiOS, FortiWeb, FortiProxy, and FortiSwitchManager that could allow attackers to bypass FortiCloud SSO ...