CVE-2022-22306: Fortinet FortiOS

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

An improper certificate validation vulnerability [CWE-295] in FortiOS 6.0.0 through 6.0.14, 6.2.0 through 6.2.10, 6.4.0 through 6.4.8, 7.0.0 may allow a network adjacent and unauthenticated attacker to man-in-the-middle the communication between the FortiGate and some peers such as private SDNs and external cloud platforms.

Affected products

• Fortinet FortiOS: from 6.0.0, up to and including 6.0.14; from 6.2.0, up to and including 6.2.10; from 6.4.0, before 6.4.9 (fixed in 6.4.9); version 7.0.0 only

Published 2022-05-24. Last modified 2026-06-17.