CVE-2025-39666 PUBLISHED

omd: Local privilege escalation when executing omd commands as root

Assigner: Checkmk
Reserved: 16.04.2025 Published: 07.04.2026 Updated: 07.04.2026

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.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Checkmk GmbH
Product	Checkmk
Versions	Default: unaffected Version 2.2.0 is affected affected from 2.3.0 to 2.3.0p46 (excl.) affected from 2.4.0 to 2.4.0p25 (excl.) affected from 2.5.0b1 to 2.5.0b3 (excl.)

References

https://checkmk.com/werk/18891

Problem Types

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

Impacts

CAPEC-471: Search Order Hijacking
CAPEC-17: Accessing, Modifying or Executing Executable Files