---
cve: "CVE-2026-66793"
severity: "HIGH"
cvss: 8.8
epss: "57%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-08-18 15:17:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T15:47:24+02:00"
---

# CVE-2026-66793

> 8.8 HIGH

## Beschreibung

A flaw was found in the governance-policy-addon-controller component of Red Hat Advanced Cluster Management for Kubernetes. A user with permissions to annotate the namespaced ManagedClusterAddOn resource can override the governance-policy container image. This allows an attacker to run a controlled image with cluster-admin privileges on the managed cluster, leading to arbitrary code execution and privilege escalation.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/security/cve/CVE-2026-66793>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2507538>
- <https://access.redhat.com/errata/RHSA-2026:60386>
- <https://access.redhat.com/errata/RHSA-2026:60387>
- <https://access.redhat.com/errata/RHSA-2026:60388>
- <https://access.redhat.com/errata/RHSA-2026:60389>
- <https://access.redhat.com/errata/RHSA-2026:60390>
- <https://access.redhat.com/errata/RHSA-2026:60391>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-66793) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_