Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in the site context that are processed when the `omd` administrative command is run by root.

Attack Vector Local

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Checkmk GmbH Checkmk unaffected
Version Status Constraints
2.2.0 affected —
2.3.0 affected < 2.3.0p46
2.4.0 affected < 2.4.0p25
2.5.0b1 affected < 2.5.0b3

No data.

No data.

No data.

Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://checkmk.com/werk/18891 cve-icon cve-icon
History

Tue, 07 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Description Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in the site context that are processed when the `omd` administrative command is run by root.
Title omd: Local privilege escalation when executing omd commands as root
First Time appeared Checkmk
Checkmk checkmk
Weaknesses CWE-426
CWE-829
CPEs cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*
Vendors & Products Checkmk
Checkmk checkmk
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Checkmk

Published:

Updated: 2026-04-07T13:18:19.609Z

Reserved: 2025-04-16T07:07:38.257Z

Link: CVE-2025-39666

cve-icon Vulnrichment

Updated: 2026-04-07T13:18:16.178Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-07T13:16:44.847

Modified: 2026-04-07T13:20:11.643

Link: CVE-2025-39666

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses