CVE-2025-24471Network attack vector

Authenticated network access via ignored certificate revocation

Published Jun 10, 2025 · Updated Aug 11, 2026

Improper certificate validation in Fortinet FortiOS allows remote authenticated users to connect to EAP tunnels with revoked certificates. The IKED process establishes an IKEv2 certificate-authenticated, EAP-enabled tunnel even when certificate validation reports revocation. Exploitation requires a certificate-bearing, EAP-verified remote user; the bypass preserves network access after that certificate has been revoked.

CVSS severity6.5
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Fortinet FortiOS allows remote authenticated users to connect to EAP tunnels with revoked certificates. The IKED process establishes an IKEv2 certificate-authenticated, EAP-enabled tunnel even when certificate validation reports revocation. Exploitation requires a certificate-bearing, EAP-verified remote user; the bypass preserves network access after that certificate has been revoked.

The record

CVE
CVE-2025-24471
Published
Jun 10, 2025
Updated
Aug 11, 2026
Vendor
Siemens
Product
RUGGEDCOM APE1808
Classifications
CWE-295, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · RUGGEDCOM APE1808version=0 <*
Fortinet · FortiOSversion=7.4.0 <=7.4.7; version=7.6.0 <=7.6.1

Published CVSS scores

6.5FortinetCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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