CVE-2021-24015: Fortinet FortiMail

High severity, CVSS 8.8. EPSS: 1.2% chance of exploitation in the next 30 days.

An improper neutralization of special elements used in an OS Command vulnerability in the administrative interface of FortiMail before 6.4.4 may allow an authenticated attacker to execute unauthorized commands via specifically crafted HTTP requests.

Affected products

• Fortinet FortiMail: from 5.4.0, up to and including 5.4.12; from 6.0.0, before 6.0.11 (fixed in 6.0.11); from 6.2.0, before 6.2.7 (fixed in 6.2.7); from 6.4.0, before 6.4.4 (fixed in 6.4.4)

Published 2021-07-12. Last modified 2026-06-17.