VULNERABILITY INTELLIGENCE
CVE-2026-66793
CVSS score8.8 HIGH
EPSS probability0.81%
CISA KEVNot currently listed
Published2026-08-18
Last modified2026-08-27
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
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.
Weakness classification
- secalert@redhat.com: CWE-20