CVE-2026-82928
Undocumented access path in mH-DEVELOPER
- State
- Published
- Severity
- 7.7 High
- Published
- Sep 28, 2026
- Updated
- Sep 28, 2026
- Reserved
- Aug 31, 2026
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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.7 High | 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 | CERT-PL |
Weaknesses
- CWE-1242 Inclusion of Undocumented Features or Chicken Bits
Affected Products
| Product | Versions |
|---|---|
mH-DEVELOPERF&F Filipowski |
|
References
- https://cert.pl/posts/2026/09/CVE-2026-82928/third-party-advisory
- https://www.fif.com.pl/pl/strona-glowna/1367-mh-developer.htmlproduct
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