VDE-2025-094

Vulnerability from csaf_janitzaelectronicsgmbh - Published: 2025-11-24 12:00 - Updated: 2025-11-24 12:00
Summary
Janitza: Vulnerability in Modbus interface of UMG 96-PA and UMG 96-PA-MID+
Severity
Medium
Notes
Summary: A vulnerability in the devices UMG 96-PA and UMG 96-PA-MID+ enables an unauthenticated remote attacker to cause the device to become unavailable.
Impact: When exploiting the vulnerability the device becomes unavailable. It will not continue to work as expected including not responding to further requests. Additionally it's measurement functionalities stop working effectively making the device unavailable until the next restart.
Mitigation: It is strongly advised to operate the device in a closed network protected by a suitable firewall. Network access to the device should be limited to only enable necessary components to access it. Special focus should be on the Modbus protocol as the core communication protocol of the device.
Remediation: It is strongly advised to update to the newest version. The vulnerability is fixed in version 3.54.
CVE-2025-41729

An unauthenticated remote attacker can send a specially crafted Modbus read command to the device which leads to a denial of service.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1287 - Improper Validation of Specified Type of Input
Mitigation It is strongly advised to operate the device in a closed network protected by a suitable firewall. Network access to the device should be limited to only enable necessary components to access it. Special focus should be on the Modbus protocol as the core communication protocol of the device.
Vendor Fix It is strongly advised to update to the newest version. The vulnerability is fixed in version 3.54.
References
Acknowledgments
CERTVDE certvde.com/en/
Milence - Commercial Vehicle Charging Europe B.V.
To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERTVDE",
        "summary": "Coordination",
        "urls": [
          "https://certvde.com/en/"
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      },
      {
        "organization": "Milence - Commercial Vehicle Charging Europe B.V.",
        "summary": "Reporting"
      }
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      {
        "category": "summary",
        "text": "A vulnerability in the devices UMG 96-PA and UMG 96-PA-MID+ enables an unauthenticated remote attacker to cause the device to become unavailable.",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "When exploiting the vulnerability the device becomes unavailable. It will not continue to work as expected including not responding to further requests. Additionally it\u0027s measurement functionalities stop working effectively making the device unavailable until the next restart.",
        "title": "Impact"
      },
      {
        "category": "description",
        "text": "It is strongly advised to operate the device in a closed network protected by a suitable firewall. Network access to the device should be limited to only enable necessary components to access it. Special focus should be on the Modbus protocol as the core communication protocol of the device.",
        "title": "Mitigation"
      },
      {
        "category": "description",
        "text": "It is strongly advised to update to the newest version. The vulnerability is fixed in version 3.54.",
        "title": "Remediation"
      }
    ],
    "publisher": {
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      "contact_details": "security@janitza.de",
      "name": "Janitza electronics GmbH",
      "namespace": "https://www.janitza.com"
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    "references": [
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        "url": "https://www.janitza.com/de-de/service-support/security-issue-ticket"
      },
      {
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        "summary": "Janitza advisory overview at CERT@VDE",
        "url": "https://certvde.com/de/advisories/vendor/janitza/"
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        "category": "self",
        "summary": "VDE-2025-094: Janitza: Vulnerability in Modbus interface of UMG 96-PA and UMG 96-PA-MID+ - HTML",
        "url": "https://certvde.com/en/advisories/VDE-2025-094"
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        "summary": "VDE-2025-094: Janitza: Vulnerability in Modbus interface of UMG 96-PA and UMG 96-PA-MID+ - CSAF",
        "url": "https://janitza.csaf-tp.certvde.com/.well-known/csaf/white/2025/vde-2025-094.json"
      }
    ],
    "title": "Janitza: Vulnerability in Modbus interface of UMG 96-PA and UMG 96-PA-MID+",
    "tracking": {
      "aliases": [
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      "cve": "CVE-2025-41729",
      "cwe": {
        "id": "CWE-1287",
        "name": "Improper Validation of Specified Type of Input"
      },
      "notes": [
        {
          "category": "description",
          "text": "An unauthenticated remote attacker can send a specially crafted Modbus read command to the device which leads to a denial of service.",
          "title": "Description"
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            "confidentialityImpact": "NONE",
            "environmentalScore": 7.5,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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          ]
        }
      ],
      "title": "DoS via Modbus Read Command"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.