Red Hat Security Advisory: OpenShift Container Platform 4.20.16 packages and security update
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.20.16. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:3855 Security Fix(es): * golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.20 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html-single/updating_clusters/index#updating-cluster-cli.
AI Analysis
Technical Summary
This advisory addresses a moderate severity vulnerability (CVE-2025-61728) in the golang archive/zip package used by Red Hat OpenShift Container Platform 4.20. The vulnerability involves excessive CPU consumption during the building of the archive index, which could impact system performance. Red Hat has released updated RPM packages and container images in OpenShift Container Platform 4.20.16 to fix this issue. The advisory recommends upgrading to these updated packages and images using the OpenShift CLI or web console. Detailed upgrade instructions are provided in Red Hat's official documentation.
Potential Impact
The vulnerability causes excessive CPU consumption when processing archive indexes in the golang archive/zip package. This can degrade system performance and resource availability on affected OpenShift Container Platform 4.20 deployments. There is no indication of remote code execution or data compromise from this vulnerability in the advisory. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Container Platform 4.20.16 packages and container images. Users should upgrade to these updated versions as soon as they are available in their release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console. Follow Red Hat's official upgrade documentation for OpenShift Container Platform 4.20 to fully apply this update. No additional mitigation steps are indicated by the vendor advisory.
Red Hat Security Advisory: OpenShift Container Platform 4.20.16 packages and security update
Description
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.20.16. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:3855 Security Fix(es): * golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.20 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html-single/updating_clusters/index#updating-cluster-cli.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory addresses a moderate severity vulnerability (CVE-2025-61728) in the golang archive/zip package used by Red Hat OpenShift Container Platform 4.20. The vulnerability involves excessive CPU consumption during the building of the archive index, which could impact system performance. Red Hat has released updated RPM packages and container images in OpenShift Container Platform 4.20.16 to fix this issue. The advisory recommends upgrading to these updated packages and images using the OpenShift CLI or web console. Detailed upgrade instructions are provided in Red Hat's official documentation.
Potential Impact
The vulnerability causes excessive CPU consumption when processing archive indexes in the golang archive/zip package. This can degrade system performance and resource availability on affected OpenShift Container Platform 4.20 deployments. There is no indication of remote code execution or data compromise from this vulnerability in the advisory. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Container Platform 4.20.16 packages and container images. Users should upgrade to these updated versions as soon as they are available in their release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console. Follow Red Hat's official upgrade documentation for OpenShift Container Platform 4.20 to fully apply this update. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:3851
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a160976e29bf47b50641fe5
Added to database: 05/26/2026, 20:58:30 UTC
Last enriched: 07/30/2026, 11:48:04 UTC
Last updated: 07/31/2026, 21:28:45 UTC
Views: 84
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