KEVIntel
9.6
CVSS
Critical

CVE-2024-55591

PUBLISHED

An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and...

Exploited in the wild Used in malware PoC available Remote Low complexity No user interaction
Vendor
Fortinet
Product
FortiOS, FortiProxy
Published
Jan 14, 2025
EPSS

Description

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.

nodejs ios cisa malware ransomware nuclei_scanner edge nessus_scanner

CVSS scores

CVSS v3.1 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:W/RC:C

Exploitation status

Exploited in the wild

Recorded 2025-01-14 00:00:00 UTC · Source

Used in malware

Recorded 2025-01-14 00:00:00 UTC · Source

Proof of concept available

Recorded 2025-01-22 14:16:30 UTC · Source

SSVC decision points

Exploitation
active
Automatable
Yes
Technical impact
total

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source Added
CISA Jan 14, 2025

Recent mentions

CVE-2025-32756: Zero-Day Vulnerability in Multiple Fortinet Products Exploited in the Wild

Tenable Blog · May 14, 2025

Fortinet has observed threat actors exploiting CVE-2025-32756, a critical zero-day arbitrary code execution vulnerability which affects multiple Fortinet products including FortiVoice, FortiMail, FortiNDR, FortiRecorder and FortiCamera.BackgroundOn May 13th, Fortinet published a security advisory (FG-IR-25-254) for CVE-2025-32756, a critical arbitrary code execution vulnerability affecting multiple Fortinet products.CVEDescriptionCVSSv3CVE-2025-32756An arbitrary code execution vulnerability in FortiVoice, FortiMail, FortiNDR, FortiRecorder and FortiCamera9.6AnalysisCVE-2025-32756 is an arbitrary code execution vulnerability affecting multiple Fortinet products including FortiVoice, FortiMail, FortiNDR, FortiRecorder and FortiCamera. A remote unauthenticated attacker can send crafted HTTP requests in order to create a stack-based overflow condition which would allow for the execution of arbitrary code. This vulnerability was discovered by the Fortinet Product Security Team who observed threat activity involving a device running FortiVoice.According to Fortinet, the threat actors operations included scanning the network, erasing system crashlogs and enabling ‘fcgi debugging’ which is used to log authentication attempts, including SSH logins. The ‘fcgi debugging’ option is not enabled by default and the Fortinet advisory recommends reviewing the setting as one possible indicator of compromise (IoC).Historical Exploitation of Fortinet DevicesFortinet vulnerabilities have historically been common targets for cyber attackers, and CVE-2025-32756 is the eighteenth Fortinet vulnerability to be added to the Cybersecurity and Infrastructure Security Agency’s (CISA) Known Exploited Vulnerabilities (KEV) list.CVEDescriptionPatchedTenable BlogCVE-2024-55591Fortinet Authentication Bypass in FortiOS and FortiProxyJanuary 2025CVE-2024-55591: Fortinet Authentication Bypass Zero-Day Vulnerability Exploited in the WildCVE-2024-21762Fortinet FortiOS Out-of-bound Write Vulnerability...

Potential proof of concepts

These PoCs are unverified and could contain malware. Use at your own risk.

exfil0/CVE-2024-55591-POC

github · Created 2025-01-29 14:54:40 UTC · 10 stars

A comprehensive all-in-one Python-based Proof of Concept script to discover and exploit a critical authentication bypass vulnerability (CVE-2024-55591) in certain Fortinet devices.

watchtowrlabs/fortios-auth-bypass-poc-CVE-2024-55591

github · Created 2025-01-27 06:25:53 UTC · 52 stars

virus-or-not/CVE-2024-55591

github · Created 2025-01-24 20:29:56 UTC · 5 stars

An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS and FortiProxy may allow a remote attacker to gain super-admin privileges via crafted requests to Node.js websocket module.

sysirq/fortios-auth-bypass-exploit-CVE-2024-55591

github · Created 2025-01-22 14:16:30 UTC · 3 stars

sysirq/fortios-auth-bypass-poc-CVE-2024-55591

github · Created 2025-01-21 12:30:21 UTC · 23 stars

watchtowrlabs/fortios-auth-bypass-check-CVE-2024-55591

github · Created 2025-01-16 07:26:15 UTC · 65 stars

Timeline

  • CVE ID Reserved

  • Exploit Used in Malware

  • Added to KEVIntel

  • CVE Published to Public

  • Detected by Nessus

  • Proof of Concept Exploit Available

  • Detected by Nuclei