CVE-2021-25749

Name: CVE-2021-25749
Creator: NVD / NIST
Published: 2023-05-24T17:15:09.413+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2021-25749 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Windows workloads can run as ContainerAdministrator even when those workloads set the runAsNonRoot option to true.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

Windows workloads can run as ContainerAdministrator even when those workloads set the runAsNonRoot option to true.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.21%

11.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Kubernetes	Kubernetes	>= 1.20.0, <= 1.21.0
Kubernetes	Kubernetes	>= 1.22.0, < 1.22.14
Kubernetes	Kubernetes	>= 1.23.0, < 1.23.11
Kubernetes	Kubernetes	>= 1.24.0, < 1.24.5

References

https://groups.google.com/g/kubernetes-security-announce/c/qqTZgulISzAMailing List
https://groups.google.com/g/kubernetes-security-announce/c/qqTZgulISzAMailing List

Timeline

Published: May 24, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25749?

Windows workloads can run as ContainerAdministrator even when those workloads set the runAsNonRoot option to true.

How severe is CVE-2021-25749?

CVE-2021-25749 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25749?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25749?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST