A flaw was found in Kubernetes kubelet on Windows nodes. When kubelet resolves a volume subPath that is a symbolic link, it does not reject an ordinary UNC network path. Following that link causes Windows to authenticate to the remote share with NTLM, exposing the NetNTLMv2 hash of the kubelet account. That hash may be cracked or, if the node is domain-joined, used in an NTLM relay.
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History
Fri, 25 Sep 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in Kubernetes kubelet on Windows nodes. When kubelet resolves a volume subPath that is a symbolic link, it does not reject an ordinary UNC network path. Following that link causes Windows to authenticate to the remote share with NTLM, exposing the NetNTLMv2 hash of the kubelet account. That hash may be cracked or, if the node is domain-joined, used in an NTLM relay. | |
| Title | kubelet: kubelet: Subpath symlinking on Windows nodes permits NTLM coercion | |
| Weaknesses | CWE-59 | |
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threat_severity
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cvssV3_1
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MITRE
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Vulnrichment
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NVD
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Redhat
OpenCVE Enrichment
Updated: 2026-09-25T18:00:20Z
Weaknesses