VULNERABILITY INTELLIGENCE
CVE-2026-15937
EPSS probability0.23%
CISA KEVNot currently listed
Published2026-09-04
Last modified2026-09-08
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.
Weakness classification
- security@checkmk.com: CWE-295