CVE-2024-55591
Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability
- Published
- Jan 14, 2025
- Updated
- Aug 5, 2026
- Assigning CNA
- fortinet
- Evidence observed
- Jan 14, 2025
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and FortiProxy version 7.0.0 through 7.0.19 and 7.2.0 through 7.2.12 allows a remote attacker to gain super-admin privileges via crafted requests to Node.js websocket module.
Sources
9- CVE-2024-55591Scanner
PoC scanner for the FortiOS/FortiProxy authentication bypass (CVE-2024-55591), supporting single targets and CIDR/URL batch checks to identify vulnerable devices.
- CVE-2024-55591-POCExploit
A comprehensive all-in-one Python-based Proof of Concept script to discover and exploit a critical authentication bypass vulnerability (CVE-2024-55591) in certain Fortinet devices.
Proof-of-concept exploit for FortiOS authentication bypass (CVE-2024-55591) that allows unauthenticated access to system logs via WebSocket on affected FortiGate and FortiProxy versions.
Responsible use
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