Vulnerability in Fortinet Fortios
CVE-2024-55591
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-…
EPSS: 0.941 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:W/RC:C.
Affected products
- Fortinet Fortios — versions 7.0.0
- Fortinet Fortiproxy — versions 7.2.0, 7.0.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
- watchtowrlabs/fortios-auth-bypass-poc-CVE-2024-55591
- watchtowrlabs/fortios-auth-bypass-check-CVE-2024-55591
- sysirq/fortios-auth-bypass-poc-CVE-2024-55591
- exfil0/CVE-2024-55591-POC
- virus-or-not/CVE-2024-55591
- sysirq/fortios-auth-bypass-exploit-CVE-2024-55591
- UMChacker/CVE-2024-55591-POC
- 0x7556/CVE-2024-55591
- packetinside/CISA_
- plzheheplztrying/cve_
References
Frequently asked questions
- What is CVE-2024-55591?
- CVE-2024-55591 is a critical-severity vulnerability in Fortinet Fortios, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.6/10. Published 2025-01-14.
- How severe is CVE-2024-55591?
- Critical severity. CVSS v3 base score is 9.6 out of 10.
- Is CVE-2024-55591 known to be exploited?
- Yes. CVE-2024-55591 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-01-14), indicating it is being actively exploited. 25 public proof-of-concept repositories are indexed.