CVE-2024-55591FortinetFirewall and VPNJanuary 14, 2025

Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability

Critical 9.8Actively exploitedUsed by ransomware

Description

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.

What to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

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Details

Vendor
Fortinet
Product
FortiOS e FortiProxy
CVE
CVE-2024-55591
Affected versions
FortiOS 7.0: from 7.0.0 to 7.0.16
FortiProxy 7.2: from 7.2.0 to 7.2.12
FortiProxy 7.0: from 7.0.0 to 7.0.19 (from the advisory and NVD; check the exact builds in the official advisory)
CVSS score
9.8
Actively exploited
Yes, listed in the CISA Known Exploited Vulnerabilities catalog
CISA due date
January 21, 2025 (deadline for US federal agencies: a good benchmark for you too)
Source
CISA KEV – original advisory
Published
January 14, 2025

The description and the recommended action are quoted from the public advisory; severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.

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