CVE-2025-65000: SSH private keys of the "Remote alert handlers (Linux)" rule were exposed in the rule page's HTML source in Checkmk <=…
CVE-2025-65000 · Severity: medium · CVSS 5.3 · Published 2025-12-18
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-65000 being exploited in the wild.
How severe is CVE-2025-65000?
Medium severity, with a CVSS score of 5.3, published 18 December 2025.
Which products and versions are affected?
Checkmk. The advisory does not name versions.
Is there a fix for CVE-2025-65000?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-65000?
Check whether you run Checkmk. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.