Windows-machine-config-operator: windows-machine-config-operator: wicd csr extra-organization allows privilege escalation to system:masters

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-54099",
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "dateUpdated": "2026-06-23T03:55:53.995Z",
    "dateReserved": "2026-06-11T19:02:42.736Z",
    "datePublished": "2026-06-22T12:46:04.051Z",
    "state": "PUBLISHED"
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        "shortName": "redhat",
        "dateUpdated": "2026-06-22T12:46:04.051Z"
      },
      "datePublic": "2026-06-10T00:00:00.000Z",
      "title": "Windows-machine-config-operator: windows-machine-config-operator: wicd csr extra-organization allows privilege escalation to system:masters",
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but does not reject additional organization values such as system:masters. A compromised Windows worker node that holds WICD credentials can submit a CSR that is auto-approved and signed by the cluster, yielding a client certificate that grants cluster-administrator privileges and enabling full cluster takeover."
        }
      ],
      "affected": [
        {
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openshift4-wincw/windows-machine-config-rhel8-operator",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openshift4-wincw/windows-machine-config-rhel9-operator",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "defaultStatus": "affected"
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift for Windows Containers",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openshift4-wincw/windows-machine-config-rhel9-operator",
          "cpes": [
            "cpe:/a:redhat:windows_machine_config"
          ],
          "defaultStatus": "affected"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Improper Privilege Management",
              "cweId": "CWE-269",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://access.redhat.com/security/cve/CVE-2026-54099",
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ]
        },
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487950",
          "name": "RHBZ#2487950",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ]
        }
      ],
      "metrics": [
        {},
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "attackVector": "LOCAL",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "NONE",
            "scope": "CHANGED",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH"
          }
        }
      ],
      "workarounds": [
        {
          "lang": "en",
          "value": "At this time, no mitigation or workaround is available for this vulnerability. Customers are advised to apply the appropriate updates as they become available."
        }
      ],
      "timeline": [
        {
          "time": "2026-06-11T00:00:00.000Z",
          "lang": "en",
          "value": "Reported to Red Hat."
        },
        {
          "time": "2026-06-10T00:00:00.000Z",
          "lang": "en",
          "value": "Made public."
        }
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          "shortName": "CISA-ADP",
          "dateUpdated": "2026-06-23T03:55:53.995Z"
        },
        "title": "CISA ADP Vulnrichment",
        "metrics": [
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}