PT-2026-51305 · Red Hat · Openshift Container Platform 4

Published 2026-06-22 · Updated 2026-06-22 · CVE-2026-54099

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Red Hat OpenShift Container Platform 4 (affected versions not specified)

Description A flaw exists in the Windows Machine Config Operator (WMCO) where the WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but fails to reject additional organization values, such as system:masters. This allows a compromised Windows worker node possessing WICD credentials to submit a CSR that is auto-approved and signed by the cluster. This process results in a client certificate that grants cluster-administrator privileges, potentially leading to a full cluster takeover.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

CVE-2026-54099

Affected Products

Openshift Container Platform 4

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-54099 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2487950 · Note
• https://access.redhat.com/security/cve/CVE-2026-54099 · Note
• https://twitter.com/CVEnew/status/2069090887070892535 · Twitter Post
• https://twitter.com/vuldb/status/2069082632147886548 · Twitter Post
• https://twitter.com/infoflowcloud/status/2069092060955574715 · Twitter Post
• https://twitter.com/ptdbugs/status/2069063096509829566 · Twitter Post
• https://twitter.com/ptdbugs/status/2069058792248004979 · Twitter Post
• https://twitter.com/ptdbugs/status/2069058802972811665 · Twitter Post