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TI-2024-36904 Aliases CVE-2024-55591GHSA-v4mr-pqhx-vpm2

Authentication bypass in Fortinet FortiOS

Priority CRITICAL 100Exploited in the wildCWE-288Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-288.

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.

Why it matters now

Exploitation Active In CISA KEV since 2025-01-14CISA due date 2025-01-21Known ransomware use
EPSS 0.9435 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortiOS7.0.0 – 7.0.16—No fix listedCNA
FortinetFortiProxy7.2.0 – 7.2.12; 7.0.0 – 7.0.19—No fix listedCNA
  • FortiOS VendorFortinet Affected 7.0.0 – 7.0.16 Fixed in — No fix listed CNA
  • FortiProxy VendorFortinet Affected 7.2.0 – 7.2.12; 7.0.0 – 7.0.19 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*7.0.0 to before 7.0.20; 7.2.0 to before 7.2.13VulnerableFortinet
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*7.0.0 to before 7.0.17VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.20; 7.2.0 to before 7.2.13 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.17 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2025-01-14 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2024-55591
  3. 2026-10-03 Alias added: GHSA-v4mr-pqhx-vpm2

References

Advisory 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-15234 A use of externally-controlled format string in Fortinet FortiOS versions 7.4.0 through… KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-14448 Out-of-bounds write in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-12585 Heap-based buffer overflow in Fortinet FortiOS-6K7K KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-20674 Out-of-bounds write in Fortinet FortiProxy KEVCVSS 3.1CRITICAL 9.8
See all 276 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences