CVE-2024-55591

criticalpriority · act · 90OT risk · criticalKEV · exploitedEU KEV · CNWEPSS 0.944 · 100 %ileexploit · PoCDEEUNLRUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 10 exploits · PoC

Likely / severe?

94.3% (100th) EPSS

CVSS 9.8 · critical

Is it mine?

20 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2025-01-14remediate by 2025-01-21

required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

EU KEVflagged by CNWreported 2025-02-13patched 2025-01-14ransomware

Authentication bypass using an alternate path or channel vulnerability

EPSS · scored 2026-10-27

Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability

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

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:Csecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@fortinet.comexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:W/RC:Csecondary · NCSC-NL NL

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-288USCWE-288USCWE-288US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

exploits (10)

Public proof-of-concept and weaponised exploit code.

0x7556/CVE-2024-555910x7556/CVE-2024-55591PoC · poc_in_github
UMChacker/CVE-2024-55591-POCUMChacker/CVE-2024-55591-POCPoC · poc_in_github
exfil0/CVE-2024-55591-POCA 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.PoC · poc_in_github
gotr00t0day/CVE-2024-55591CVE-2024-55591 — FortiOS / FortiProxy Authentication BypassPoC · poc_in_github
sysirq/fortios-auth-bypass-exploit-CVE-2024-55591sysirq/fortios-auth-bypass-exploit-CVE-2024-55591PoC · poc_in_github
sysirq/fortios-auth-bypass-poc-CVE-2024-55591sysirq/fortios-auth-bypass-poc-CVE-2024-55591PoC · poc_in_github

affected products (20)

Products and version ranges known to be affected.

Fortinet FortiOS <7.0.17all versionscert_bundDE
Fortinet FortiProxy <7.0.20all versionscert_bundDE
Fortinet FortiProxy <7.2.13all versionscert_bundDE
Fortinet FortiOS< 7.0.17cert_bundDE
Fortinet FortiProxy< 7.0.20cert_bundDE
Fortinet FortiProxy< 7.2.13cert_bundDE
Fortinet FortiOS≤ 7.0.0 ≤7.0.16enisa_euvdEU
Fortinet FortiProxy≤ 7.2.0 ≤7.2.12enisa_euvdEU
Fortinet FortiProxy≤ 7.0.0 ≤7.0.19enisa_euvdEU
Fortinet Inc. FortiOS7.0.0 → 7.0.17fstec_bduRU
Fortinet Inc. FortiProxy7.0.0 → 7.0.20fstec_bduRU
Fortinet Inc. FortiProxy7.2.0 → 7.2.13fstec_bduRU
fortios_and_fortiproxyall versionsncsc_nlNLcpe:2.3:a:fortinet:fortios_and_fortiproxy:*:*:*:*:*:*:*:*
fortinet fortianalyzerall versionsncsc_nlNLcpe:2.3:a:fortinet:fortianalyzer:*:*:*:*:*:*:*:*
fortinet fortimanagerall versionsncsc_nlNLcpe:2.3:a:fortinet:fortimanager:*:*:*:*:*:*:*:*
fortinet fortiosall versionsncsc_nlNLcpe:2.3:a:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortiswitchmanagerall versionsncsc_nlNLcpe:2.3:a:fortinet:fortiswitchmanager:*:*:*:*:*:*:*:*
fortinet fortios7.0.0 → 7.0.17nvdUScpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortiproxy7.0.0 → 7.0.20nvdUScpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
fortinet fortiproxy7.2.0 → 7.2.13nvdUScpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2025-0009Kwetsbaarheid verholpen in FortiNet FortiOS en FortiProxyNL2025-01-14csaf · ncsc_nlNL
FortiNet heeft een kwetsbaarheid verholpen in FortiOS en FortiProxy.
NCSC-2025-0053Kwetsbaarheden verholpen in Fortinet FortiSwitch, FortiManager, FortiAnalyzer, FortiOS en FortiProxyNL2025-02-12csaf · ncsc_nlNL
Fortinet heeft kwetsbaarheden verholpen in verschillende producten, waaronder FortiOS, FortiProxy, FortiPAM, FortiSwitchManager, FortiSandbox, FortiManager en FortiAnalyzer.
WID-SEC-W-2025-0070Fortinet FortiOS: Schwachstelle ermöglicht Erlangen von AdministratorrechtenDeutsch2025-01-14csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Fortinet FortiOS und Fortinet FortiProxy ausnutzen, um Administratorrechte zu erlangen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl nvd NVD CVE.org MITRE

published 2025-01-14modified 2026-08-05

references (6)

External citations — patches, advisories, analysis.

scry

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