{"id":"CVE-2026-82928","aliases":["EUVD-2026-88228","GHSA-27f6-7954-3wm7"],"status":"published","title":"Undocumented access path in mH-DEVELOPER","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.\n\n\nThis issue was fixed in version 3.0.30","severity":{"version":"4.0","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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00183,"percentile":0.07955,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1242"],"published":"2026-09-28T12:11:40Z","modified":"2026-09-28T17:17:50Z","products":[{"vendor":"f\u0026f filipowski","product":"mh-developer"}],"references":[{"url":"https://cert.pl/posts/2026/09/CVE-2026-82928/","tags":["third-party-advisory"]},{"url":"https://www.fif.com.pl/pl/strona-glowna/1367-mh-developer.html","tags":["product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82928"},{"url":"https://cert.pl/posts/2026/09/CVE-2026-82928"},{"url":"https://github.com/advisories/GHSA-27f6-7954-3wm7"}],"sources":{"cve":[{"id":"CVE-2026-82928","title":"Undocumented access path in mH-DEVELOPER","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.\n\n\nThis issue was fixed in version 3.0.30","status":"published","published":"2026-09-28T12:11:40.726Z","modified":"2026-09-28T16:32:28.919Z","cvss":[{"version":"4.0","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","level":"high","assessor":"cna"}],"cwes":["CWE-1242"],"updated_at":"2026-11-02T13:40:46.161838Z"}],"euvd":[{"id":"EUVD-2026-88228","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.\n\n\nThis issue was fixed in version 3.0.30","status":"published","published":"2026-09-28T12:11:40Z","modified":"2026-09-28T16:32:28Z","cvss":[{"version":"4.0","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","level":"high"}],"updated_at":"2026-11-02T17:27:53.091489Z"}],"ghsa":[{"id":"GHSA-27f6-7954-3wm7","title":"mH-DEVELOPER smart home module contains a hardcoded SSH public key in /root/.ssh/authorized_keys,...","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.\n\n\nThis issue was fixed in version 3.0.30","status":"published","published":"2026-09-28T15:31:51Z","modified":"2026-09-28T15:31:56Z","cvss":[{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-1242"],"updated_at":"2026-11-02T15:12:32.013867Z"}],"nvd":[{"id":"CVE-2026-82928","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.\n\n\nThis issue was fixed in version 3.0.30","status":"published","published":"2026-09-28T13:17:23.253Z","modified":"2026-09-28T17:17:50.883Z","cvss":[{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-1242"],"updated_at":"2026-11-02T14:12:52.081323Z"}]}}