Vulnerability intelligence

CVE-2026-66780

Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 CWE-532

A flaw was found in the submariner-operator component. The `submariner-k8s-broker-cluster` Role, which is assigned to joined clusters, possesses excessive permissions. This allows a compromised cluster to alter network configurations, specifically by overwriting other clusters' endpoint information. Consequently, an attacker can redirect inter-cluster tunnel traffic, enabling a Man-in-the-Middle (MITM) attack across the entire cluster mesh.

CVSS Score

9.9

Critical

EPSS — Exploit Probability

0.6%

Riskier than 45% of all CVEs · checked 2026-10-01

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

unknown

Check vendor advisories