CVE-2025-9708

Description

A vulnerability exists in the Kubernetes C# client where the certificate validation logic accepts properly constructed certificates from any Certificate Authority (CA) without properly verifying the trust chain. This flaw allows a malicious actor to present a forged certificate and potentially intercept or manipulate communication with the Kubernetes API server, leading to possible man-in-the-middle attacks and API impersonation.

References

https://groups.google.com/g/kubernetes-security-announce/c/rLopt2Msvbw/m/rK6XeNw2CgAJ

https://github.com/kubernetes/kubernetes/issues/134063

http://www.openwall.com/lists/oss-security/2025/09/16/1

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS