All vulnerabilities
CVE-2026-76654

Kubernetes: Subpath symlinking on Windows nodes permits NTLM coercion

Kubernetes KubernetesContainers & cloud
Open in ThreatlineRecord JSON
CVSS
5.8Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published26 Oct 2026Updated 26 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

An NTLM coercion vulnerability exists on Windows nodes when the subPath supplied in a pod's volumeMounts is set to a symbolic link that points to an attacker-controlled network share. When a kubelet resolves symlinks, it does not reject a target that resolves to a UNC path. As a result, the kubelet will transparently attempt to authenticate to the share using NTLM. This allows an attacker to obtain the NetNTLMv2 hash of the account under which the kubelet is running. An attacker could then attempt to crack the hash to retrieve the corresponding password or relay it to impersonate the node, if the node is domain-joined.

Text from CVE List

Affected versions 4

  • Kubernetesaffected: v1.34.0 through v1.34.11CVE List
  • Kubernetesaffected: v1.35.0 through v1.35.8CVE List
  • Kubernetesaffected: v1.36.0 through v1.36.4CVE List
  • Kubernetesaffected: v1.37.0 through v1.37.0CVE List

References 2