CVE-2023-22640: Fortinet FortiOS

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

A out-of-bounds write in Fortinet FortiOS version 7.2.0 through 7.2.3, FortiOS version 7.0.0 through 7.0.10, FortiOS version 6.4.0 through 6.4.11, FortiOS version 6.2.0 through 6.2.13, FortiOS all versions 6.0, FortiProxy version 7.2.0 through 7.2.1, FortiProxy version 7.0.0 through 7.0.7, FortiProxy all versions 2.0, FortiProxy all versions 1.2, FortiProxy all versions 1.1, FortiProxy all versions 1.0 allows an authenticated attacker to execute unauthorized code or commands via specifically crafted requests.

Affected products

• Fortinet FortiOS: from 6.0.0, up to and including 6.0.16; from 6.2.0, before 6.2.14 (fixed in 6.2.14); from 6.4.0, before 6.4.12 (fixed in 6.4.12); from 7.0.0, before 7.0.11 (fixed in 7.0.11); from 7.2.0, before 7.2.4 (fixed in 7.2.4)
• Fortinet FortiProxy: version 1.0.0 only; version 1.1.0 only; version 1.2.0 only; version 2.0.0 only

Published 2023-05-03. Last modified 2026-06-17.