A buffer underflow vulnerability in FortiOS & FortiProxy HTTP/HTTPS administrative interface could allow an unauthenticated, remote attacker to execute arbitrary code on the device and/or perform a DoS using specifically crafted requests.
https://www.helpnetsecurity.com/2023/03/09/cve-2023-25610/
https://www.fortiguard.com/psirt/FG-IR-23-001
https://thehackernews.com/2023/03/new-critical-flaw-in-fortios-and.html