What’s Vulnerable › Vulnerabilities

CVE-2024-55599

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-08 · updated 2026-06-17
• Weakness: CWE-358

Description

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 (FortiGate): from 6.4.0 before 7.2.11; from 7.4.0 before 7.4.8; 7.6.0 — fixed in 7.2.11, 7.4.8
• Fortinet FortiProxy: from 7.0.0 before 7.4.9; from 7.6.0 before 7.6.2 — fixed in 7.4.9, 7.6.2
• Fortinet FortiSASE: 24.4.32

How to fix

Upgrade to a fixed version: Fortinet FortiOS (FortiGate) 7.2.11, 7.4.8; Fortinet FortiProxy 7.4.9, 7.6.2. Check the vendor advisory for mitigations.

References

• https://fortiguard.fortinet.com/psirt/FG-IR-24-053
• https://cert-portal.siemens.com/productcert/html/ssa-864900.html

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