CVE DATABASE / CVE-2024-55591
CVE-2024-55591
Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability
Confirmed exploited in the wild. Added 2025-01-14.
Federal remediation due 2025-01-21.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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.
CVSS 3.1 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- https://fortiguard.fortinet.com/psirt/FG-IR-24-535
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-55591
Data: NIST NVD + CISA KEV. NVD last modified 2025-10-24. Always verify against the vendor advisory before acting.