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Status published
Low
CVE-2025-65000
Exposure of SSH Private Keys in Remote Alert Handlers (Linux) Rule
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
More from Checkmk GmbH
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CVE-2025-64997
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CVE-2025-64996
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CVE-2025-58122
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Medium
5.3
Affected Vendor
Checkmk GmbH
View all reports →Affected Software
Checkmk
Vulnerable Versions:
2.4.0, 2.3.0
Timeline
Official Publish:
December 18th, 2025
Last Modified:
December 18th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.