CVE-2021-24023: Fortinet Fortiai Firmware

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

An improper input validation in FortiAI v1.4.0 and earlier may allow an authenticated user to gain system shell access via a malicious payload in the "diagnose" command.

Affected products

• Fortinet Fortiai Firmware: up to and including 1.4.0

Published 2021-06-03. Last modified 2026-06-17.