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
- 99.8%
- Model date
- Oct 17, 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
- Fortinet - Authentication BypassTemplate
http/cves/2024/CVE-2024-55591.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: status,word($.matchers[*].type)
- 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.
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.