CVE-2020-10027

Name: CVE-2020-10027
Creator: NVD / NIST
Published: 2020-05-11T23:15:11.77+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2020-10027 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

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

0.69%

48.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Zephyrproject	Zephyr	1.14.0
Zephyrproject	Zephyr	2.1.0

References

https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10027
https://github.com/zephyrproject-rtos/zephyr/pull/23328Patch, Third Party Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23499Patch, Third Party Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23500Patch, Third Party Advisory
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-35Third Party Advisory
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10027
https://github.com/zephyrproject-rtos/zephyr/pull/23328Patch, Third Party Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23499Patch, Third Party Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23500Patch, Third Party Advisory
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-35Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2020-10027?

How severe is CVE-2020-10027?

CVE-2020-10027 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10027?

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-2020-10027?

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

Scan your code now

Source: NVD / NIST