Fortinet Patches CVE-2026-24858 After Active FortiOS SSO Exploitation Detected

Fortinet has begun releasing security updates to address a critical flaw impacting FortiOS that has come under active exploitation in the wild.
The vulnerability, assigned the CVE identifier CVE-2026-24858 (CVSS score: 9.4), has been described as an authentication bypass related to FortiOS single sign-on (SSO). The flaw also affects FortiManager and FortiAnalyzer. The company said it’s