CVE-2023-23780: Fortinet FortiWeb

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

A stack-based buffer overflow in Fortinet FortiWeb version 7.0.0 through 7.0.1, Fortinet FortiWeb version 6.3.6 through 6.3.19, Fortinet FortiWeb 6.4 all versions allows attacker to escalation of privilege via specifically crafted HTTP requests.

Affected products

• Fortinet FortiWeb: from 6.3.0, before 6.3.20 (fixed in 6.3.20); from 6.4.0, up to and including 6.4.2; from 7.0.0, before 7.0.2 (fixed in 7.0.2)

Published 2023-02-16. Last modified 2026-06-17.