CVE-2026-44277: Fortinet Fortiauthenticator

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A improper access control vulnerability in Fortinet FortiAuthenticator 8.0.2, FortiAuthenticator 8.0.0, FortiAuthenticator 6.6.0 through 6.6.8, FortiAuthenticator 6.5.0 through 6.5.6 may allow attacker to execute unauthorized code or commands via crafted requests.

Affected products

• Fortinet Fortiauthenticator: from 6.4.0, up to and including 6.4.10; from 6.5.0, before 6.5.7 (fixed in 6.5.7); from 6.6.0, before 6.6.9 (fixed in 6.6.9); from 8.0.0, before 8.0.3 (fixed in 8.0.3)

Published 2026-05-12. Last modified 2026-06-17.