CVE-2025-39666

omd: Local privilege escalation when executing omd commands as root

State: Published
Severity: 9.3 Critical
Published: Apr 7, 2026
Updated: Apr 7, 2026
Reserved: Apr 16, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	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	Checkmk

Weaknesses

CWE-426 Untrusted Search Path
CWE-829 Inclusion of Functionality from Untrusted Control Sphere

Affected Products

Product	Versions
CheckmkCheckmk GmbH	2.2.0Affected 2.3.0 to before 2.3.0p46Affected 2.4.0 to before 2.4.0p25Affected 2.5.0b1 to before 2.5.0b3Affected

References

https://checkmk.com/werk/18891vendor-advisory

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