High [CVE-2026-39828] Unauthorized command execution via discarded SSH permissions
This high-severity Red Hat Linux advisory covers CVE-2026-39828 affecting RHEM 1.0 for RHEL 9, Red Hat Advanced Cluster Security for Kubernetes 4.10, Red Hat Advanced Cluster Security for Kubernetes 4.11.
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Summary
Unauthorized command execution via discarded SSH permissions. Red Hat rates this important (CVSS 8.8).
Weakness: CWE-281. Affected package(s): advanced-cluster-security/rhacs-roxctl-rhel8:1781686458, advanced-cluster-security/rhacs-roxctl-rhel8:1781686446.
Resolved in Red Hat advisory RHSA-2026:26547 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.11; Red Hat Advanced Cluster Security for Kubernetes 4.9; and 44 more.
- advanced-cluster-security/rhacs-roxctl-rhel8:1781686458
- advanced-cluster-security/rhacs-roxctl-rhel8:1781686446
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:26547
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:26547 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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