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
Published: 2026-09-28
Score: 7.7 High
EPSS: n/a
KEV: No
AI Analysis

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Remediation

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Tracking

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History

Mon, 28 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
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
Title Undocumented access path in mH-DEVELOPER
First Time appeared F F Filipowski
F F Filipowski mh-developer
Weaknesses CWE-1242
CPEs cpe:2.3:a:f_f_filipowski:mh-developer:*:*:*:*:*:*:*:*
Vendors & Products F F Filipowski
F F Filipowski mh-developer
References
Metrics cvssV4_0

{'score': 7.7, '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'}

Subscriptions

F F Filipowski Mh-developer
cve-icon MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published:

Updated: 2026-09-28T12:11:40.726Z

Reserved: 2026-08-31T12:23:36.734Z

Link: CVE-2026-82928

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-1242

    Inclusion of Undocumented Features or Chicken Bits