CVE-2026-71471: Red Hat Advanced Cluster Management For Kubernetes 2.11

Critical severity, CVSS 9.0. EPSS: 1.2% chance of exploitation in the next 30 days.

A flaw was found in acm-search-v2-rhel9. An attacker with administrative privileges on the hub cluster, specifically with patch access to the Search Custom Resource (CR), could exploit a vulnerability in the `Collector.ImageOverride` field. This allows the attacker to deploy an arbitrary container image across all managed clusters. The consequence is remote code execution (RCE), enabling the attacker to execute commands and potentially access sensitive information across the entire fleet of managed clusters.

Affected products

• Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.11: before 1787688827 (fixed in 1787688827)
• Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.13: before 1787682112 (fixed in 1787682112)
• Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.14: before 1787682033 (fixed in 1787682033)
• Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.15: before 1787681674 (fixed in 1787681674)
• Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.16: before 1787681686 (fixed in 1787681686)
• Red Hat Red Hat Advanced Cluster Management For Kubernetes 2.17: before 1787681651 (fixed in 1787681651)

Published 2026-08-12. Last modified 2026-08-27.