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ESB-2026.3671 PUBLISHED CVSS 8.800000190734863 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3671 multicluster engine for Kubernetes v2.8.5 security update 15 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: multicluster engine for Kubernetes v2.8.5 Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2025-58183 CVE-2025-61726 CVE-2025-68121 CVE-2025-13465 CVE-2026-25639 CVE-2026-29063 CVE-2025-47907 CVE-2025-61729 CVE-2026-22029 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:8218 Comment: CVSS (Max): 8.8 CVE-2026-29063 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H EPSS (Max): 0.1% (20th) CVE-2026-29063 2026-04-14 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:8218 - Security Advisory Issued: 2026-04-15 Updated: 2026-04-15 Synopsis Multicluster engine for kubernetes v2.8.5 security update Type/Severity Security Advisory: Important Topic The multicluster engine for Kubernetes 2.8 General Availability release images, which add new features and enhancements, bug fixes, and updated container images. Description The multicluster engine for Kubernetes v2.8 images The multicluster engine for Kubernetes provides the foundational components that are necessary for the centralized management of multiple Kubernetes-based clusters across data centers, public clouds, and private clouds. You can use the engine to create new Red Hat OpenShift Container Platform clusters or to bring existing Kubernetes-based clusters under management by importing them. After the clusters are managed, you can use the APIs that are provided by the engine to distribute configuration based on placement policy. Solution For multicluster engine for Kubernetes, see the following documentation for details on how to install the images: https://access.redhat.com/documentation/en-us/ red_hat_advanced_cluster_management_for_kubernetes/2.13/html/clusters/ cluster_mce_overview#mce-install-intro Fixes o ACM-21304 - [mce-2.8] Cluster Manager Continuously OOMKilled o ACM-27019 - Fatal concurrent map read/write exception in klusterlet agent container o ACM-27599 - Installation wizard blocked due to AgentClusterInstallValidator CVEs o CVE-2025-13465 o CVE-2025-47907 o CVE-2025-58183 o CVE-2025-61726 o CVE-2025-61729 o CVE-2025-68121 o CVE-2026-22029 o CVE-2026-25639 o CVE-2026-29063 References o https://access.redhat.com/security/updates/classification/ - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1
8.800000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products

VendorProductVersions
Red Hatmulticluster engine for Kubernetes v2.8.5

Timeline

References

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