CVE-2026-667938.8HighCWE-20

CVE-2026-66793: Governance-policy-addon-controller: arbitrary container image override via managedclusteraddon annotation enables rce on spoke

Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.11

Vendor fix available · Affected: Red Hat Advanced Cluster Management for Kubernetes 2.11 · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.8%probability of exploitation in the next 30 days

57th percentile

050100

Higher than 57% of scored CVEs

8.8HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products6

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.11Versions not stated
Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.13Versions not stated
Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.14Versions not stated
Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.15Versions not stated
Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Input Validation · Input Validation and Logic
Vendor: Red Hat
Published: August 2026
Band: Unlikely (under 1%), August 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-66793 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.