CVE-2017-14201: The shell DNS command can cause unpredictable results due to misuse of stack variables.

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-08-29 · updated 2026-06-17
Weakness: CWE-416

Description

Use After Free vulnerability in the Zephyr shell allows a serial or telnet connected user to cause denial of service, and possibly remote code execution. This issue affects: Zephyr shell versions prior to 1.14.0 on all.

Affected products

zephyrproject zephyr: before 1.14.0 — fixed in 1.14.0

How to fix

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

References

https://docs.zephyrproject.org/1.14.0/releases/release-notes-1.14.html
https://github.com/zephyrproject-rtos/zephyr/pull/13260
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-17
https://docs.zephyrproject.org/1.14.0/releases/release-notes-1.14.html
https://github.com/zephyrproject-rtos/zephyr/pull/13260
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-17

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