CVE-2025-58121: checkmk — Fix

Description

Insufficient permission validation on multiple REST API endpoints in Checkmk 2.2.0, 2.3.0, and 2.4.0 before version 2.4.0p16 allows low-privileged users to perform unauthorized actions or obtain sensitive information

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-280 CWE-280

Affected Products

Vendor	Product	Versions
checkmk	checkmk	2.2.0 — 2.4.0
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All
checkmk	checkmk	All

References

Advisories & Patches

https://checkmk.com/werk/18983

Frequently Asked Questions

What is CVE-2025-58121? +

Insufficient permission validation on multiple REST API endpoints in Checkmk 2.2.0, 2.3.0, and 2.4.0 before version 2.4.0p16 allows low-privileged users to perform unauthorized actions or obtain sensitive information It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-58121? +

CVE-2025-58121 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-58121? +

CVE-2025-58121 affects products from checkmk, specifically: checkmk. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-58121? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-58121