{"id":"CVE-2026-82928","title":"mH-DEVELOPER smart home module contains a hardcoded SSH public key in /root/.ssh/authorized_keys, serving as a potential backdoor","summary":"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 mat…","severity":"high","cvss":7.7,"cvssVector":"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","cwe":["CWE-1242"],"vendor":"F&F Filipowski","product":"mH-DEVELOPER","affected":["mH-DEVELOPER < 3.0.30"],"published":"2026-09-28","updated":"2026-09-28","sourceUpdated":"2026-09-28T13:17:23.253","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82928","references":[{"url":"https://cert.pl/posts/2026/09/CVE-2026-82928/","label":"cvd@cert.pl"},{"url":"https://www.fif.com.pl/pl/strona-glowna/1367-mh-developer.html","label":"cvd@cert.pl"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-09-28T13:09:42.239Z","slug":"CVE-2026-82928","body":"## Overview\n\nmH-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.\n\n\nThis issue was fixed in version 3.0.30\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}