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.
Published: n/a
Score: 5.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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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
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N'}

threat_severity

Moderate

Subscriptions

No data.

cve-icon MITRE

No data.

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-15T16:00:00Z

Links: CVE-2026-76654 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-59

    Improper Link Resolution Before File Access ('Link Following')