Medium severity6.8GHSA Advisory· Published Sep 16, 2025· Updated Apr 15, 2026

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.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
KubernetesClientNuGet	< 17.0.14	17.0.14

Affected products

Kubernetes Client/CsharpGHSA
Range: < 17.0.14

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/advisories/GHSA-w7r3-mgwf-4mqqghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2025-9708ghsaADVISORY
www.openwall.com/lists/oss-security/2025/09/16/1nvdWEB
github.com/kubernetes/kubernetes/issues/134063nvdWEB
groups.google.com/g/kubernetes-security-announce/c/rLopt2Msvbw/m/rK6XeNw2CgAJnvdWEB

News mentions

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cvss	0.442
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000