Red Hat Security Advisory: OpenShift Container Platform 4.18.33 bug fix 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 container images for Red Hat OpenShift Container Platform 4.18.33. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHSA-2026:2071 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/release_notes/ Security Fix(es): * openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing (CVE-2025-15467) * libpng: LIBPNG out-of-bounds read in png_image_read_composite (CVE-2025-66293) * glib: Integer overflow in in g_escape_uri_string() (CVE-2025-13601) 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 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.
AI Analysis
Technical Summary
This advisory covers security fixes in Red Hat OpenShift Container Platform 4.18.33, specifically addressing three vulnerabilities: CVE-2025-15467 in OpenSSL which allows remote code execution or denial of service via an oversized Initialization Vector in CMS parsing; CVE-2025-66293 in libpng involving an out-of-bounds read in png_image_read_composite; and CVE-2025-13601 in glib caused by an integer overflow in g_escape_uri_string(). These vulnerabilities affect OpenShift Container Platform versions from 4.18.0 up to but not including 4.18.33. The advisory recommends upgrading to 4.18.33 to mitigate these issues.
Potential Impact
The vulnerabilities fixed in this update include a high-impact remote code execution or denial of service flaw in OpenSSL, a memory safety issue in libpng that could lead to out-of-bounds reads, and an integer overflow in glib that could cause unexpected behavior. Exploitation of these vulnerabilities could compromise the security and stability of affected OpenShift Container Platform deployments. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
A fixed version, Red Hat OpenShift Container Platform 4.18.33, is available and includes patches for the identified vulnerabilities. Users are strongly advised to upgrade to this version using the OpenShift CLI or web console as per Red Hat's documented upgrade procedures. No additional mitigations are specified beyond applying the update.
Red Hat Security Advisory: OpenShift Container Platform 4.18.33 bug fix 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 container images for Red Hat OpenShift Container Platform 4.18.33. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHSA-2026:2071 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/release_notes/ Security Fix(es): * openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing (CVE-2025-15467) * libpng: LIBPNG out-of-bounds read in png_image_read_composite (CVE-2025-66293) * glib: Integer overflow in in g_escape_uri_string() (CVE-2025-13601) 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 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers security fixes in Red Hat OpenShift Container Platform 4.18.33, specifically addressing three vulnerabilities: CVE-2025-15467 in OpenSSL which allows remote code execution or denial of service via an oversized Initialization Vector in CMS parsing; CVE-2025-66293 in libpng involving an out-of-bounds read in png_image_read_composite; and CVE-2025-13601 in glib caused by an integer overflow in g_escape_uri_string(). These vulnerabilities affect OpenShift Container Platform versions from 4.18.0 up to but not including 4.18.33. The advisory recommends upgrading to 4.18.33 to mitigate these issues.
Potential Impact
The vulnerabilities fixed in this update include a high-impact remote code execution or denial of service flaw in OpenSSL, a memory safety issue in libpng that could lead to out-of-bounds reads, and an integer overflow in glib that could cause unexpected behavior. Exploitation of these vulnerabilities could compromise the security and stability of affected OpenShift Container Platform deployments. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
A fixed version, Red Hat OpenShift Container Platform 4.18.33, is available and includes patches for the identified vulnerabilities. Users are strongly advised to upgrade to this version using the OpenShift CLI or web console as per Red Hat's documented upgrade procedures. No additional mitigations are specified beyond applying the update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:2072
- Cve Count
- 3
- Additional Cves
- ["CVE-2025-15467","CVE-2025-66293"]
Threat ID: 6a1f4e86e29bf47b5007efaa
Added to database: 06/02/2026, 21:43:34 UTC
Last enriched: 08/16/2026, 18:37:51 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 133
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