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CVE-2025-24472 — Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability

CVE-2025-24472 · FortiOS · CVSS 8.1 · KEV

In brief

Severity · CVSS
High8.1CVSS 3.1, High
EPSS
7%
CISA KEV
Known exploited, listed since 18 Mar 2025
Vendor
Fortinet
Published · Modified
·
Last verified

Summary

An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS 7.0.0 through 7.0.16 and FortiProxy 7.2.0 through 7.2.12, 7.0.0 through 7.0.19 may allow a remote unauthenticated attacker with prior knowledge of upstream and downstream devices serial numbers to gain super-admin privileges on the downstream device, if the Security Fabric is enabled, via crafted CSF proxy requests.

Weakness: CWE-288

Title, description and the vendor's statements are quoted from the CVE record; a vendor's advisory is summarised in Patcharo's words, with a link.

Affected and fixed versions

Per product and release branch, as the vendor's CVE record and official advisory state them. A fixed release is shown only when a document names it: the vendor's, or CERT-FR's for Check Point, with its source.

3 branches with a published fixed release

Fortinet FortiOS

Source: FG-IR-24-535CVE-2025-24472

  1. 7.6
    Affected versionsNot affected
    First fixed release—
  2. 7.4
    Affected versionsNot affected
    First fixed release—
  3. 7.2End of life
    Affected versionsNot affected
    First fixed release—
  4. 7.0End of life
    Affected versions7.0.0 – 7.0.16
    First fixed release7.0.17
  5. 6.4End of life
    Affected versionsNot affected
    First fixed release—

Releases the vendor does not list are not affected.

Fortinet FortiProxy

Source: FG-IR-24-535CVE-2025-24472

  1. 7.6
    Affected versionsNot affected
    First fixed release—
  2. 7.4
    Affected versionsNot affected
    First fixed release—
  3. 7.2Approaching end of support
    Affected versions7.2.0 – 7.2.12
    First fixed release7.2.13
  4. 7.0End of life
    Affected versions7.0.0 – 7.0.19
    First fixed release7.0.20
  5. 2.0End of life
    Affected versionsNot affected
    First fixed release—

Releases the vendor does not list are not affected.

Remediation

Fix available

Vendor fix

  • FortiOS 7.07.0.17
  • FortiProxy 7.27.2.13
  • FortiProxy 7.07.0.20

Upgrade to a fixed release listed above for your branch, or to a later fixed release the vendor explicitly supports.

Upgrade to FortiOS version 7.0.17 or above Upgrade to FortiProxy version 7.2.13 or above Upgrade to FortiProxy version 7.0.20 or above

SourceFortinet (CVE record)

SourceFortiGuard FG-IR-24-535

CISA KEV required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA due date:

SourceCISA KEV

CERT-FR recommendation

Refer to the vendor's security bulletin to obtain patches (see Documentation section).

SourceCERTFR-2025-AVI-0030

Last verified 1 Oct 2026 at 09:32 UTC

Known exploitation

Added to CISA KEV on 18 Mar 2025

Federal remediation due date: 8 Apr 2025

Known use in ransomware campaigns

The CISA required action is shown under Remediation.

7% probability of exploitation in the next 30 days (percentile 94%).

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CERT-FR

1 document of the French national CERT (ANSSI) references this CVE.

Advisory (AVI)CERTFR-2025-AVI-0030Published 14 Jan 2025 · updated 12 Feb 2025

Multiple vulnerabilities in Fortinet products

Remote arbitrary code executionSecurity policy bypass

Summary

Multiple vulnerabilities have been discovered in Fortinet products. They allow an attacker to cause remote arbitrary code execution and a security policy bypass. Fortinet indicates that the CVE-2024-55591 vulnerability is actively exploited.

Recommendation

Refer to the vendor's security bulletin to obtain patches (see Documentation section).

Official document on cert.ssi.gouv.frread by Patcharo 28 Sept 2026 at 20:04 UTCMachine translation of the French text published by CERT-FR; a text whose translation did not pass Patcharo's checks stays in French. Identifiers, versions and links are copied unchanged.

Timeline

  1. Published by the source
  2. Added to CISA KEV
  3. CISA remediation due date
  4. Source record last modified
  5. EPSS score computed
  6. Last verified by Patcharo

Official sources

References

Fortinet · CISA Known Exploited Vulnerabilities · NVD · FIRST EPSS · FortiGuard FG-IR-24-535

How Patcharo reads this

Affected and fixed releases come from the vendor's structured statements and are matched against exact versions; CVSS from NVD, exploitation from CISA KEV and the vendor's own advisory, probability from FIRST EPSS. Missing data stays Unknown and never becomes Not affected.

Read the methodologyRead the guide: FortiOS version numbering: branches, patch releases and the Feature and Mature labels

Related vulnerabilities

Other records affecting the same products, newest first.

  • CVE-2026-71407A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 m…High
  • CVE-2025-53844A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, For…High
  • CVE-2025-53847A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS…High
  • CVE-2025-68686Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor VulnerabilityMediumKEV
  • CVE-2025-64157A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7…High

All FortiOS vulnerabilitiesAll FortiProxy vulnerabilitiesAll Fortinet vulnerabilities