CVE-2022-43953: Fortinet FortiOS

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A use of externally-controlled format string in Fortinet FortiOS version 7.2.0 through 7.2.4, FortiOS all versions 7.0, FortiOS all versions 6.4, FortiOS all versions 6.2, FortiProxy version 7.2.0 through 7.2.1, FortiProxy version 7.0.0 through 7.0.7 allows attacker to execute unauthorized code or commands via specially crafted commands.

Affected products

• Fortinet FortiOS: from 6.2.0, up to and including 6.2.15; from 6.4.0, up to and including 6.4.12; from 7.0.0, up to and including 7.0.11; from 7.2.0, up to and including 7.2.4
• Fortinet FortiProxy: from 7.0.0, up to and including 7.0.7; version 7.2.0 only; version 7.2.1 only

Published 2023-06-13. Last modified 2026-06-17.