Vulnerability-Lookup

GHSA-27F6-7954-3WM7

Vulnerability from github – Published: 2026-09-28 15:31 – Updated: 2026-09-28 15:31

Details

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

Severity

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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-82928"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1242"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-28T13:17:23Z",
    "severity": "HIGH"
  },
  "details": "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\u00a03.0.30",
  "id": "GHSA-27f6-7954-3wm7",
  "modified": "2026-09-28T15:31:51Z",
  "published": "2026-09-28T15:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82928"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/posts/2026/09/CVE-2026-82928"
    },
    {
      "type": "WEB",
      "url": "https://www.fif.com.pl/pl/strona-glowna/1367-mh-developer.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-82928 (GCVE-0-2026-82928)

Vulnerability from cvelistv5 – Published: 2026-09-28 12:11 – Updated: 2026-09-28 16:32

Title

Undocumented access path in mH-DEVELOPER

Summary

Severity

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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-28 15:49 UTC

CWE

CWE-1242 - Inclusion of Undocumented Features or Chicken Bits

Assigner

CERT-PL ENISA root

References

2 references

URL	Tags
https://cert.pl/posts/2026/09/CVE-2026-82928/	third-party-advisory
https://www.fif.com.pl/pl/strona-glowna/1367-mh-d…	product

Impacted products

1 product

Vendor	Product	Version
F&F Filipowski	mH-DEVELOPER	Affected: 0 , < 3.0.30 (semver) cpe:2.3:a:f_f_filipowski:mh-developer::::::::

Credits

Krzysztof Chudzik (CERT.PL)

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JSON

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-82928",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-28T15:49:18.975247Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-28T16:32:28.919Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "mH-DEVELOPER",
          "programFiles": [
            "/root/.ssh/authorized_keys"
          ],
          "vendor": "F\u0026F Filipowski",
          "versions": [
            {
              "lessThan": "3.0.30",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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                }
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              "operator": "OR"
            }
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        }
      ],
      "credits": [
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      "metrics": [
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          "cvssV4_0": {
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-27F6-7954-3WM7

CVE-2026-82928 (GCVE-0-2026-82928)

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