CVE-2025-65000

Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule

State: Published
Severity: 2.3 Low
Published: Dec 18, 2025
Updated: Dec 18, 2025
Reserved: Nov 12, 2025

Description

SSH private keys of the "Remote alert handlers (Linux)" rule were exposed in the rule page's HTML source in Checkmk <= 2.4.0p18 and all versions of Checkmk 2.3.0. This potentially allowed unauthorized triggering of predefined alert handlers on hosts where the handler was deployed.

Scores

CVSS	Score	Vector	Source
4.0	2.3 Low	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:L	Checkmk

Weaknesses

CWE-212 Improper Removal of Sensitive Information Before Storage or Transfer

Affected Products

Product	Versions
CheckmkCheckmk GmbH	2.4.0 to before 2.4.0p18Affected 2.3.0Affected

References

https://checkmk.com/werk/19030

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