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CVE-2025-9708

Kubernetes C# Client: improper certificate validation in custom CA mode may lead to man-in-the-middle attacks

Published: Sep 16, 2025Updated: Nov 4, 2025 Sources: CVE List NVD GHSA BDUCWE-295
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
0.3%
Top 79.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Kubernetes C# client accepts certificates from any CA without properly verifying the trust chain

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-295

Affected Products

KubernetesGoogle Inc
On-premDev Tool
Cloud & SaaS / container-orchestration
KubernetesClientNuGetOSS Libraries
Kubernetes CSharp ClientKubernetes
Mixed
Cloud & SaaS / container-orchestration
google inccommercialUSMobile Appsaka google
nugetpackage-ecosystemOSS Libraries
kubernetesoss-projectUSCloud & SaaSaka k8s

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://groups.google.com/g/kubernetes-security-announce/c/rLopt2Msvbw/m/rK6XeNw2CgAJ
groups.google.com
https://nvd.nist.gov/vuln/detail/CVE-2025-9708
nvd.nist.gov
https://github.com/kubernetes/kubernetes/issues/134063
github.com
and 2 more references View all →

Timeline

Published
Sep 16, 2025
Last Updated
Nov 4, 2025

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