{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54100", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-06-11T19:02:42.736Z", "datePublished": "2026-06-22T12:46:09.141Z", "dateUpdated": "2026-06-22T12:46:09.141Z"}, "containers": {"cna": {"title": "Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theft", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture WICD and kubelet bootstrap credentials transferred during node configuration, enabling compromise of Windows node identities in the cluster."}], "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", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift:4"]}, {"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", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift:4"]}, {"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", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:windows_machine_config"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-54100", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487953", "name": "RHBZ#2487953", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-06-10T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-295", "description": "Improper Certificate Validation", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-295: Improper Certificate Validation", "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": [{"lang": "en", "time": "2026-06-11T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-06-10T00:00:00.000Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-06-22T12:46:09.141Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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