CVE-2024-55591 (GCVE-0-2024-55591)

Vulnerability from cvelistv5 – Published: 2025-01-14 14:08 – Updated: 2026-08-05 03:55
VLAI CISA ENISA Previdian
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.
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-22 00:00 UTC
CWE
  • CWE-288 - Execute unauthorized code or commands
Assigner
fortinet CNA under the mitre root
CNA scorecard C 72/100 over 145 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
Fortinet FortiOS Affected: 7.0.0 , ≤ 7.0.16 (semver)
    cpe:2.3:o:fortinet:fortios:7.0.16:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.15:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.14:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.13:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.12:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.11:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.10:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.9:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.8:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.7:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.6:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.5:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.4:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.3:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.2:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.1:*:*:*:*:*:*:*
    cpe:2.3:o:fortinet:fortios:7.0.0:*:*:*:*:*:*:*
Create a notification for this product.
Fortinet FortiProxy Affected: 7.2.0 , ≤ 7.2.12 (semver)
Affected: 7.0.0 , ≤ 7.0.19 (semver)
    cpe:2.3:a:fortinet:fortiproxy:7.2.12:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.11:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.10:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.9:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.8:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.7:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.6:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.19:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.18:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.17:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.16:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.15:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.14:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.13:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.12:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.11:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.10:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.9:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.8:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.7:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.6:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiproxy:7.0.0:*:*:*:*:*:*:*
Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2024-55591

Status: Confirmed

Status Updated: 2025-01-14 00:00 UTC

Exploited: Yes


Timestamps
First Seen: 2025-01-14
Asserted: 2025-01-14

Scope
Notes: Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability | Affected: Fortinet / FortiOS and FortiProxy | Description: 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. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2025-01-21 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://fortiguard.fortinet.com/psirt/FG-IR-24-535 ; https://nvd.nist.gov/vuln/detail/CVE-2024-55591

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev


Details
Cwes CWE-288
Feed CISA Known Exploited Vulnerabilities Catalog
Product FortiOS and FortiProxy
Due Date 2025-01-21
Date Added 2025-01-14
Vendorproject Fortinet
Vulnerabilityname Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability
Knownransomwarecampaignuse Known

References

Created: 2026-02-02 12:26 UTC | Updated: 2026-11-04 13:37 UTC
ENISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2024-55591

Status: Confirmed

Status Updated: 2025-02-13 00:00 UTC

Exploited: Yes


Timestamps
First Seen: 2025-02-13
Asserted: 2025-02-13

Scope
Notes: Affected: Fortinet / FortiOS/FortiProxy | Description: Authentication bypass using an alternate path or channel vulnerability | Patched since: 2025/01/14 | Exploitation type: ransomware | CWEs: CWE-288 | Origin source: CNW

Evidence

Type: Csirt Report

Signal: Confirmed Compromise

Confidence: 75%

Source: enisa-cnw-kev


Details
Cwes CWE-288
Euvd EUVD-2024-52819
Notes
Catalog ENISA / EU CSIRTs Network (CNW) KEV JSON
Product FortiOS/FortiProxy
Datereported 2025/02/13
Originsource CNW
Patchedsince 2025/01/14
Vendorproject Fortinet
Exploitationtype ransomware
Vulnerabilityname
Threatactorsexploiting

References

Created: 2026-02-02 12:25 UTC | Updated: 2026-11-04 13:28 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2024-55591

Status: Confirmed

Status Updated: 2025-01-14 00:00 UTC

Exploited: Yes


Timestamps
First Seen: 2025-01-14
Asserted: 2025-01-14

Scope
Notes: KEVIntel entry: An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and... | Affected: Fortinet / FortiOS, FortiProxy | CVSS: 9.6 (CRITICAL) | Used in malware: yes | Not yet in CISA KEV: False

Evidence

Type: Public Report

Signal: Confirmed Compromise

Confidence: 70%

Source: kevintel


Details
Feed KEVIntel (kevintel.com)
Title An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and...
Vendor Fortinet
Product FortiOS, FortiProxy
Added Date 2025-01-14T00:00:00.000Z
Cvss Score 9.6
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware yes
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False

References

Created: 2026-06-23 14:06 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website

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}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.