---
cve: "CVE-2025-9708"
severity: "MEDIUM"
cvss: 6.8
epss: "31%"
vendor: "Kubernetes"
kev: false
exploited: false
published: "2025-09-16 22:15:33"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T09:06:37+02:00"
---

# CVE-2025-9708

> 6.8 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-9708) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_