# CVE-2026-82929: F&F Filipowski mH-DEVELOPER hard-coded SSH host keys

Source: https://junglewise.ai/threats/cve-2026-82929-mh-developer-smart-home-module-uses-the-same-hard-coded-ssh-host  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-28. Updated: 2026-09-28  
License: CC BY 4.0 with a link back

CVE-2026-82929 · Severity: info · Published 2026-09-28

The mH-DEVELOPER smart home control module contains hard-coded SSH host keys identical across all devices, allowing an attacker who extracts these keys from the firmware to impersonate a trusted SSH server. This enables man-in-the-middle attacks where an attacker can intercept login credentials and commands controlling building automation systems, potentially gaining unauthorized access to heating, lighting, and other home functions.

Technologies: [F&F Filipowski mH-DEVELOPER](https://junglewise.ai/threats/technologies/mh-developer). Vendors: [F&F Filipowski](https://junglewise.ai/threats/vendors/f-f-filipowski).

## Quick answers

**Is CVE-2026-82929 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82929 being exploited in the wild.

**How severe is CVE-2026-82929?** Informational severity, published 28 September 2026.

**Which products and versions are affected?** F&F Filipowski mH-DEVELOPER below 3.0.30.

**Is there a fix for CVE-2026-82929?** A patch was published on 2026-09-28: Fixed in version 3.0.30 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-82929 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-82929?** Check whether you run F&F Filipowski mH-DEVELOPER at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability uses hard-coded cryptographic keys (CWE-321) in the SSH daemon that are shared across all devices and can be extracted from the firmware. An attacker with network access can deploy a rogue SSH server using these keys; clients will trust the server without certificate verification warnings. This permits credential theft and session hijacking of SSH connections.

## Affected products

- F&F Filipowski mH-DEVELOPER below 3.0.30

## Timeline

- 2026-09-28: disclosed
- 2026-09-28: patched: Fixed in version 3.0.30

## References

- [https://cert.pl/posts/2026/09/CVE-2026-82928/](https://cert.pl/posts/2026/09/CVE-2026-82928/)
- [https://www.fif.com.pl/pl/strona-glowna/1367-mh-developer.html](https://www.fif.com.pl/pl/strona-glowna/1367-mh-developer.html)

## Related threats

- [F&F Filipowski mH-DEVELOPER denial of service via uncontrolled resource consumption](https://junglewise.ai/threats/cve-2026-82936-mh-developer-smart-home-module-is-vulnerable-to-denial-of-service)
- [F&F Filipowski mH-DEVELOPER use of unmaintained third-party components](https://junglewise.ai/threats/cve-2026-82935-mh-developer-smart-home-module-ships-with-an-end-of-life)
- [F&F Filipowski mH-DEVELOPER cleartext HTTP transmission](https://junglewise.ai/threats/cve-2026-82933-mh-developer-smart-home-module-sends-its-web-interface-and-api)
- [F&F Filipowski mH-DEVELOPER missing firewall initialization](https://junglewise.ai/threats/cve-2026-82932-mh-developer-smart-home-module-does-not-load-any-firewall-rules)
- [F&F Filipowski mH-DEVELOPER missing authentication in API](https://junglewise.ai/threats/cve-2026-82930-mh-developer-smart-home-module-does-not-verify-tokens-in-its)