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CVE-2026-76654VulnerabilityPublished

An NTLM coercion vulnerability exists on Windows nodes when the subPath supplied in a pod's volumeMounts is set to a

Source GCVE Database

0
Authoritative record:CVE-2026-76654· Medium 5.8

Not known to be exploited · CVSS 5.8 Medium.

Data as of 27 Oct 2026, 02:12 UTC

CVSS 3.1 base score
5.8Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
KubernetesKubernetesAffected
  • >=1.34.0 <=1.34.11
  • >=1.35.0 <=1.35.8
  • >=1.36.0 <=1.36.4
  • >=1.37.0 <=1.37.0
Fixed in–
GitHubkubernetes/kubernetespkg:github/kubernetes/kubernetesOther threatsAffected
  • >=1.34.0 <=1.34.11
  • >=1.35.0 <=1.35.8
  • >=1.36.0 <=1.36.4
  • =1.37.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, administrators should avoid using symbolic links in pod volumeMount subPaths that point to UNC paths or untrusted network shares on Windows nodes. Monitoring and restricting network share access and limiting kubelet privileges may reduce risk.

Description

CVE-2026-76654 is an NTLM coercion vulnerability affecting Windows nodes in Kubernetes environments. It occurs when a pod's volumeMount subPath is set to a symbolic link pointing to an attacker-controlled network share. The kubelet resolves the symlink and attempts NTLM authentication to the share, exposing the NetNTLMv2 hash of the kubelet's running account. This hash could be cracked or relayed to impersonate the node if it is domain-joined.

References

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