CVE-2020-28914

Name: CVE-2020-28914
Creator: NVD / NIST
Published: 2020-11-17T22:15:12.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2020-28914 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. An improper file permissions vulnerability affects Kata Containers prior to 1.11.5. When using a Kubernetes hostPath volume and mounting either a file or directory into a container as readonly, the file/directory is mounted as readOnly inside the container, but is still writable inside the guest. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

An improper file permissions vulnerability affects Kata Containers prior to 1.11.5. When using a Kubernetes hostPath volume and mounting either a file or directory into a container as readonly, the file/directory is mounted as readOnly inside the container, but is still writable inside the guest. For a container breakout situation, a malicious guest can potentially modify or delete files/directories expected to be read-only.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.37%

28.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Katacontainers	Kata-Containers	< 1.11.5

References

https://github.com/kata-containers/kata-containers/pull/1062Third Party Advisory
https://github.com/kata-containers/runtime/pull/3042Third Party Advisory
https://github.com/kata-containers/runtime/pull/3051Third Party Advisory
https://github.com/kata-containers/runtime/releases/tag/1.11.5Release Notes, Third Party Advisory
https://github.com/kata-containers/runtime/releases/tag/1.12.0Release Notes, Third Party Advisory
https://github.com/kata-containers/kata-containers/pull/1062Third Party Advisory
https://github.com/kata-containers/runtime/pull/3042Third Party Advisory
https://github.com/kata-containers/runtime/pull/3051Third Party Advisory
https://github.com/kata-containers/runtime/releases/tag/1.11.5Release Notes, Third Party Advisory
https://github.com/kata-containers/runtime/releases/tag/1.12.0Release Notes, Third Party Advisory

Timeline

Published: Nov 17, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28914?

How severe is CVE-2020-28914?

CVE-2020-28914 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28914?

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-2020-28914?

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

Scan your code now

Source: NVD / NIST