CVE-2020-10068: Zephyr Bluetooth DLE duplicate requests vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-05 · updated 2026-06-17
Weakness: CWE-20

Description

In the Zephyr project Bluetooth subsystem, certain duplicate and back-to-back packets can cause incorrect behavior, resulting in a denial of service. This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions, and version 1.14.0 and later versions.

Affected products

zephyrproject zephyr: before 1.14.0; from 2.0.0 before 2.2.0 — fixed in 1.14.0, 2.2.0

How to fix

Upgrade to a fixed version: zephyrproject zephyr 1.14.0, 2.2.0. Check the vendor advisory for mitigations.

References

https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10068
https://github.com/zephyrproject-rtos/zephyr/pull/23091
https://github.com/zephyrproject-rtos/zephyr/pull/23707
https://github.com/zephyrproject-rtos/zephyr/pull/23708
https://github.com/zephyrproject-rtos/zephyr/pull/23964
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-78
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10068
https://github.com/zephyrproject-rtos/zephyr/pull/23091
https://github.com/zephyrproject-rtos/zephyr/pull/23707
https://github.com/zephyrproject-rtos/zephyr/pull/23708
https://github.com/zephyrproject-rtos/zephyr/pull/23964
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-78

Get alerted when CVE-2020-10068 or the next vulnerability affects your stack