RHSA-2026:66385: High severity Red Hat Red Hat OpenShift Container Platform for Power vulnerability
Published Sep 17, 2026
·Updated
Important: OpenShift Container Platform 4.18.55 packages and security update
Affected Software
4 affected components
Red Hat Red Hat OpenShift Container Platform for Power
Red Hat Red Hat OpenShift Container Platform for IBM Z and LinuxONE
Red Hat Red Hat OpenShift Container Platform
Red Hat Red Hat OpenShift Container Platform for ARM 64
Event History
Sep 17, 2026
Advisory Published
via Red Hat·07:49 AM
Data Sourced
via Red Hat·07:49 AM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which OpenShift deployments are in scope for this update?
The update applies to Red Hat OpenShift Container Platform deployments on standard platforms, Power, IBM Z and LinuxONE, and ARM 64.
2
How should this advisory be prioritized?
It is rated High severity with a risk value of 33. The advisory was published and last modified on 2026-09-17.