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Vulnerabilities

Vulnerability · CVE-2025-3506

Files to be deployed with agents are accessible without authentication in Checkmk 2.1.0, Checkmk 2.2.0, Checkmk 2.3.0 and <Checkmk 2.4.0b6 allows attacker to access files that coul

Published May 8, 2025 · catalog updated May 8, 2025 · Checkmk GmbH Checkmk

Check if you run it

No confirmed exploitation is on record for CVE-2025-3506. EPSS is 0.32%. Act only if a listed version of Checkmk GmbH Checkmk is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.32%
Remediation
Version ranges on file
Affected products
vendor Checkmk GmbH Checkmk 2.4.0 <2.4.0b6

Files to be deployed with agents are accessible without authentication in Checkmk 2.1.0, Checkmk 2.2.0, Checkmk 2.3.0 and <Checkmk 2.4.0b6 allows attacker to access files that could contain secrets.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Checkmk GmbH Checkmk 2.4.0 <2.4.0b62.4.0 <2.4.0b6

How to fix CVE-2025-3506

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-3506. EPSS is 0.32%. Act only if a listed version of Checkmk GmbH Checkmk is installed.

Which versions are affected?

Compare what you have installed with Checkmk GmbH Checkmk 2.4.0 <2.4.0b6 2.4.0 <2.4.0b6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.32%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 8, 2025 · EUVD

    Detected

    Files to be deployed with agents are accessible without authentication in Checkmk 2.1.0, Checkmk 2.2.0, Checkmk 2.3.0 and <Checkmk 2.4.0b6 allows attacker to access files that could contain secrets.

  2. May 8, 2025 · EUVD

    Updated

    Files to be deployed with agents are accessible without authentication in Checkmk 2.1.0, Checkmk 2.2.0, Checkmk 2.3.0 and <Checkmk 2.4.0b6 allows attacker to access files that could contain secrets.

Sources

  • CVE.orgVulnerability recordCVE-2025-3506

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-3506

    30-day exploitation probability 0.3%

    first.org
  • EUVDVulnerability recordEUVD-2025-13999

    Files to be deployed with agents are accessible without authentication in Checkmk 2.1.0, Checkmk 2.2.0, Checkmk 2.3.0 and <Checkmk 2.4.0b6 allows attacker to access files that could contain secrets.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.