Vulnerability record · CVE-2023-3955 · published 31 October 2023

CVE-2023-3955: Kubernetes improper input validation vulnerability

Kubernetes · Kubernetes

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

8.8 CVSS 3.1 High EPSS 3.1% · top 12.7% CWE-20 · Improper input validation

8.8CVSS 3.1 base score

3.1%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Kubernetes Kubernetes

References

Link	Tags
https://github.com/kubernetes/kubernetes/issues/119595	ExploitMitigationPatchThird Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/JrX4bb7d83E	Technical Description
https://security.netapp.com/advisory/ntap-20231221-0002/
https://github.com/kubernetes/kubernetes/issues/119595	ExploitMitigationPatchThird Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/JrX4bb7d83E	Technical Description
https://security.netapp.com/advisory/ntap-20231221-0002/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-3955), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.