CVE-2025-39666
High
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.
SeverityHigh
CVSS7.3
Exploit probability—
ProductCheckmk
PublishedApr 7, 2026
First seenApr 7, 2026
Weakness typeCWE-426CWE-426CWE-829CWE-829
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| checkmk checkmk | 2.2.0, 2.3.0, 2.4.0, 2.5.0 | — |
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