CVE-2023-23781: Fortinet FortiWeb

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability [CWE-121] in FortiWeb version 7.0.1 and below, 6.4 all versions, version 6.3.19 and below SAML server configuration may allow an authenticated attacker to achieve arbitrary code execution via specifically crafted XML files.

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.