CVE-2025-65000
moderate-risk
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.
Do I need to act?
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0.04% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10
Medium
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (1)
Vendor Advisory
https://checkmk.com/werk/19030
49
/ 100
moderate-risk
Severity
21/34 · High
Exploitability
0/34 · Minimal
Exposure
28/34 · Critical