CVE-2024-55591
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2024-55591- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C - Weakness
- CWE-288
- Updated
- 2026-11-02
EUVDEUVD-2024-52819
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.
- Record
EUVD-2024-52819- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v4mr-pqhx-vpm2
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting...
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.
- Record
GHSA-v4mr-pqhx-vpm2- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-288
- Updated
- 2026-11-02
CISA KEV No score
Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability
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.
- Record
CVE-2024-55591- Weakness
- CWE-288
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2024-55591- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-288
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | watchtowrlabs/fortios-auth-bypass-check-CVE-2024-55591 | 2025-01-16 |
| PoC in GitHub | sysirq/fortios-auth-bypass-poc-CVE-2024-55591 | 2025-01-21 |
| PoC in GitHub | sysirq/fortios-auth-bypass-exploit-CVE-2024-55591 | 2025-01-22 |
| PoC in GitHub | virus-or-not/CVE-2024-55591 | 2025-01-24 |
| PoC in GitHub | watchtowrlabs/fortios-auth-bypass-poc-CVE-2024-55591 | 2025-01-27 |
| PoC in GitHub | exfil0/CVE-2024-55591-POC | 2025-01-29 |
| PoC in GitHub | 0x7556/CVE-2024-55591 | 2025-02-09 |
| PoC in GitHub | UMChacker/CVE-2024-55591-POC | 2025-05-26 |
| PoC in GitHub | uLl0a/cve-2024-55591-poc | 2026-09-01 |
| PoC in GitHub | gotr00t0day/CVE-2024-55591 | 2026-10-01 |
| Nuclei | Fortinet - Authentication Bypass |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation, exploits | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-55591 is a critical vulnerability (CVSS 9.6) in Fortinet Fortios, published January 14, 2025. CISA lists it as known to be exploited, since January 14, 2025. EUVD reports exploitation since January 14, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 94.3%, the 99th percentile. No source names a fixed version.