CVE-2026-15937
Agent receiver certificate confusion allows authentication with a certificate issued for another endpoint
Description
Improper certificate validation in Checkmk <2.5.0p10 allows a relay and a push agent that share the same UUID to reuse each other's mTLS certificate to authenticate against agent receiver endpoints in either direction, because the endpoints do not verify that the certificate was issued by their own root certificate.
No summary for this CVE yet.
Weaknesses
Affected Products
Checkmk GmbH
commercial·DEaka checkmk
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Attack Graph
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MITRE ATT&CK
1 technique Collection
References
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