CVE-2026-82928: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-27f6-7954-3wm7
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CWE-1242
Published
Advisory Summary

CVE-2026-82928 is a HIGH security vulnerability vulnerability (CWE-1242: Inclusion of Undocumented Features or Chicken Bits) affecting Software libraries in the Maven ecosystem. The weakness occurs when the device includes chicken bits or undocumented features that can create entry points for unauthorized actors.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-82928 at a Glance

CVE Identifier CVE-2026-82928
GHSA Identifier GHSA-27f6-7954-3wm7
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-1242: Inclusion of Undocumented Features or Chicken Bits
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-82928

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-82928, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1242: Inclusion of Undocumented Features or Chicken Bits, where the device includes chicken bits or undocumented features that can create entry points for unauthorized actors. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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

References

NVD — CVE-2026-82928 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82928
cert.pl/posts/2026/09/cve-2... WEB
https://cert.pl/posts/2026/09/CVE-2026-82928
www.fif.com.pl/pl/strona-glowna/13... WEB
https://www.fif.com.pl/pl/strona-glowna/1367-mh-developer.html

Frequently Asked Questions

What is CVE-2026-82928?
CVE-2026-82928 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-1242: Inclusion of Undocumented Features or Chicken Bits.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-82928?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-82928?
CVE-2026-82928 is classified under CWE-1242: Inclusion of Undocumented Features or Chicken Bits (The device includes chicken bits or undocumented features that can create entry points for unauthorized actors.).
How can I check Maven dependencies for CVE-2026-82928?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-27f6-7954-3wm7",
  "modified" : "2026-09-28T15:31:51Z",
  "published" : "2026-09-28T15:31:51Z",
  "aliases" : [ "CVE-2026-82928" ],
  "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 3.0.30",
  "severity" : [ {
    "type" : "CVSS_V4",
    "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"
  } ],
  "affected" : [ ],
  "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"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1242" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-28T13:17:23Z"
  }
}