CVE-2024-55599: Fortinet FortiOS

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

An Improperly Implemented Security Check for Standard vulnerability [CWE-358] in FortiOS version 7.6.0, version 7.4.7 and below, 7.0 all versions, 6.4 all versions and FortiProxy version 7.6.1 and below, version 7.4.8 and below, 7.2 all versions, 7.0 all versions may allow a remote unauthenticated user to bypass the DNS filter via Apple devices.

Affected products

• Fortinet FortiOS: from 6.4.0, before 7.2.11 (fixed in 7.2.11); from 7.4.0, before 7.4.8 (fixed in 7.4.8); version 7.6.0 only
• Fortinet FortiProxy: from 7.0.0, before 7.4.9 (fixed in 7.4.9); from 7.6.0, before 7.6.2 (fixed in 7.6.2)
• Fortinet Fortisase: version 24.4.32 only

Published 2025-07-08. Last modified 2026-06-17.