CVE entry · CVE-2024-55591
CVE-2024-55591: Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability
Fortinet FortiOS and FortiProxy contain an authentication bypass vulnerability that may allow an unauthenticated, remote attacker to gain super-admin privileges via crafted requests to Node.js websocket module.
- Actively exploited: added to CISA’s KEV catalog on January 14, 2025.
- Used by ransomware, according to CISA.
- Remediation deadline for US federal agencies: January 21, 2025.
- CERT-FR alert CERTFR-2025-ALE-002 of January 14, 2025.
Description from CISA’s KEV catalog.
CERT-FR alerts and notices
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CERTFR-2025-ALE-002[MàJ] Vulnérabilité dans les produits Fortinet (14 janvier 2025)
What to do
- Check whether your estate includes Fortinet FortiOS and FortiProxy, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.
References
- Vendor advisory or reference cited by CISA (fortiguard.fortinet.com)
- NVD entry (NIST)
- CISA KEV catalog
Other Fortinet vulnerabilities
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Fortinet Multiple Products Path Traversal Vulnerability
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Fortinet FortiMail Path Traversal Vulnerability
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Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
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Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
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Fortinet FortiSandbox OS Command Injection Vulnerability
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Fortinet FortiSandbox OS Command Injection Vulnerability