CVE-2020-10023

Name: CVE-2020-10023
Creator: NVD / NIST
Published: 2020-05-11T23:15:11.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2020-10023 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. The shell subsystem contains a buffer overflow, whereby an adversary with physical access to the device is able to cause a memory corruption, resulting in denial of service or possibly code execution within the Zephyr kernel. See NCC-NCC-019 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

The shell subsystem contains a buffer overflow, whereby an adversary with physical access to the device is able to cause a memory corruption, resulting in denial of service or possibly code execution within the Zephyr kernel. See NCC-NCC-019 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

Metrics

CVSS 3.1

6.8/10

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

EPSS Probability

0.47%

37.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Zephyrproject	Zephyr	1.14.1
Zephyrproject	Zephyr	2.1.0

References

https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10023
https://github.com/zephyrproject-rtos/zephyr/pull/23304Patch, Third Party Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23646Patch, Third Party Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23649Patch, Third Party Advisory
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-29Third Party Advisory
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10023
https://github.com/zephyrproject-rtos/zephyr/pull/23304Patch, Third Party Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23646Patch, Third Party Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23649Patch, Third Party Advisory
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-29Third Party Advisory

Timeline

Published: May 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10023?

How severe is CVE-2020-10023?

CVE-2020-10023 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10023?

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-2020-10023?

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

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Source: NVD / NIST