vde-2025-097

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERT@VDE",
        "summary": "coordination",
        "urls": [
          "https://certvde.com"
        ]
      },
      {
        "names": [
          "Noam Moshe",
          "Tomer Goldschmidt"
        ],
        "organization": "Claroty Team82",
        "summary": "for reporting"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en-GB",
    "notes": [
      {
        "category": "summary",
        "text": "A critical authentication bypass in EWIO-2 allows unauthenticated attackers with network access to gain administrative control over the device. Once compromised, an attacker can change configurations, manipulate data, disrupt services, and potentially render the device non-functional.",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "Due to these vulnerabilities an unauthenticated attacker can take over control of the device. The data integrity as well as the device availability could no longer be guaranteed.",
        "title": "Impact"
      },
      {
        "category": "description",
        "text": "METZ CONNECT has released a new SW-Version 2.2.0. Install version 2.2.0 or later to remediate this vulnerability. Schedule the update at your next maintenance window. No workaround offers equivalent protection.",
        "title": "Remediation"
      },
      {
        "category": "description",
        "text": "Compact Ethernet I/O controller that bridges field signals to IP networks. It acts as a Modbus TCP or BACnet/IP server (plus Modbus RTU for field devices) and includes a web-based Node‑RED environment for simple logic, visualization, and data logging—ideal for building and industrial automation.",
        "title": "Product Description"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@metz-connect.com",
      "name": "METZ CONNECT GmbH",
      "namespace": "https://www.metz-connect.com/security/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Ethernet-IO BACnet / Modbus No. 110904 ",
        "url": "https://www.metz-connect.com/home/produkte/c-logline/i-o-komponenten/ethernet-i-os.69.de.html?id=110904"
      },
      {
        "category": "external",
        "summary": "Energy-Controlling M-Bus No. 110930 ",
        "url": "https://www.metz-connect.com/home/produkte/c-logline/energie-controlling/datenlogger.6a.de.html?id=110930"
      },
      {
        "category": "external",
        "summary": "Energy-Controlling BACnet / Modbus No. 110935 ",
        "url": "https://www.metz-connect.com/home/produkte/c-logline/energie-controlling/datenlogger.6a.de.html?id=110935"
      },
      {
        "category": "self",
        "summary": "VDE-2025-097: METZ CONNECT: Config API – Authentication bypass leads to admin takeover in EWIO2 series - HTML",
        "url": "https://certvde.com/en/advisories/VDE-2025-097"
      },
      {
        "category": "self",
        "summary": "VDE-2025-097: METZ CONNECT: Config API – Authentication bypass leads to admin takeover in EWIO2 series - CSAF",
        "url": "https://metz-connect.csaf-tp.certvde.com/.well-known/csaf/white/2025/vde-2025-097.json"
      },
      {
        "category": "external",
        "summary": "METZ CONNECT advisory overview at CERT@VDE",
        "url": "https://certvde.com/de/advisories/vendor/metz-connect/"
      }
    ],
    "title": "METZ CONNECT: Config API – Authentication bypass leads to admin takeover in EWIO2 series",
    "tracking": {
      "aliases": [
        "VDE-2025-097"
      ],
      "current_release_date": "2025-11-18T12:00:00.000Z",
      "generator": {
        "date": "2025-11-14T14:54:22.879Z",
        "engine": {
          "name": "Secvisogram",
          "version": "2.5.38"
        }
      },
      "id": "VDE-2025-097",
      "initial_release_date": "2025-11-18T12:00:00.000Z",
      "revision_history": [
        {
          "date": "2025-11-18T12:00:00.000Z",
          "number": "1.0.0",
          "summary": "Initial revision"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "branches": [
                  {
                    "category": "product_name",
                    "name": "EWIO2-M",
                    "product": {
                      "name": "Energy-Controlling EWIO2-M",
                      "product_id": "CSAFPID-11001",
                      "product_identification_helper": {
                        "model_numbers": [
                          "110930"
                        ]
                      }
                    }
                  },
                  {
                    "category": "product_name",
                    "name": "EWIO2-M-BM",
                    "product": {
                      "name": "Energy-Controlling EWIO2-M-BM",
                      "product_id": "CSAFPID-11002",
                      "product_identification_helper": {
                        "model_numbers": [
                          "110935"
                        ]
                      }
                    }
                  }
                ],
                "category": "product_family",
                "name": "Energy-Controlling"
              },
              {
                "branches": [
                  {
                    "category": "product_name",
                    "name": "EWIO2-BM",
                    "product": {
                      "name": "Ethernet-IO EWIO2-BM",
                      "product_id": "CSAFPID-11003",
                      "product_identification_helper": {
                        "model_numbers": [
                          "110904 "
                        ]
                      }
                    }
                  }
                ],
                "category": "product_family",
                "name": "Ethernet-IO"
              }
            ],
            "category": "product_family",
            "name": "Hardware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "<2.2.0",
                "product": {
                  "name": "Firmware <2.2.0",
                  "product_id": "CSAFPID-21001"
                }
              },
              {
                "category": "product_version",
                "name": "2.2.0",
                "product": {
                  "name": "Firmware 2.2.0",
                  "product_id": "CSAFPID-22001"
                }
              }
            ],
            "category": "product_family",
            "name": "Firmware"
          }
        ],
        "category": "vendor",
        "name": "METZ CONNECT"
      }
    ],
    "product_groups": [
      {
        "group_id": "CSAFGID-0001",
        "product_ids": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003"
        ],
        "summary": "Affected products."
      },
      {
        "group_id": "CSAFGID-0002",
        "product_ids": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003"
        ],
        "summary": "Fixed products."
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware <2.2.0 installed on Energy-Controlling EWIO2-M",
          "product_id": "CSAFPID-31001"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware <2.2.0 installed on Energy-Controlling EWIO2-M-BM",
          "product_id": "CSAFPID-31002"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11002"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware <2.2.0 installed on Ethernet-IO EWIO2-BM",
          "product_id": "CSAFPID-31003"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11003"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.2.0 installed on Energy-Controlling EWIO2-M",
          "product_id": "CSAFPID-32001"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.2.0 installed on Energy-Controlling EWIO2-M-BM",
          "product_id": "CSAFPID-32002"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11002"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.2.0 installed on Ethernet-IO EWIO2-BM",
          "product_id": "CSAFPID-32003"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11003"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-41733",
      "cwe": {
        "id": "CWE-305",
        "name": "Authentication Bypass by Primary Weakness"
      },
      "notes": [
        {
          "category": "description",
          "text": "The commissioning wizard on the affected devices does not validate if the device is already initialized. An unauthenticated remote attacker can construct POST requests to set root credentials.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "METZ CONNECT has released a new SW-Version 2.2.0. Install version 2.2.0 or later to remediate this vulnerability. Schedule the update at your next maintenance window. No workaround offers equivalent protection.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 9.8,
            "environmentalSeverity": "CRITICAL",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.8,
            "temporalSeverity": "CRITICAL",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31003"
          ]
        }
      ],
      "title": "Possible malfunction credential injection"
    },
    {
      "cve": "CVE-2025-41734",
      "cwe": {
        "id": "CWE-98",
        "name": "Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')"
      },
      "notes": [
        {
          "category": "description",
          "text": "An unauthenticated remote attacker can execute arbitrary php files and gain full access of the affected devices.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "Bug #69948 path/domain are not sanitized in setcookie.",
          "url": "https://bugs.php.net/bug.php?id=69948"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "METZ CONNECT has released a new SW-Version 2.2.0. Install version 2.2.0 or later to remediate this vulnerability. Schedule the update at your next maintenance window. No workaround offers equivalent protection.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 9.8,
            "environmentalSeverity": "CRITICAL",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.8,
            "temporalSeverity": "CRITICAL",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31003"
          ]
        }
      ],
      "title": "Unauthenticated Local File Inclusion in php module"
    },
    {
      "cve": "CVE-2025-41735",
      "cwe": {
        "id": "CWE-434",
        "name": "Unrestricted Upload of File with Dangerous Type"
      },
      "notes": [
        {
          "category": "description",
          "text": "A low privileged remote attacker can upload any file to an arbitrary location due to missing file check resulting in remote code execution.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "METZ CONNECT has released a new SW-Version 2.2.0. Install version 2.2.0 or later to remediate this vulnerability. Schedule the update at your next maintenance window. No workaround offers equivalent protection.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 8.8,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 8.8,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31003"
          ]
        }
      ],
      "title": "Possible arbitrary file upload"
    },
    {
      "cve": "CVE-2025-41736",
      "cwe": {
        "id": "CWE-35",
        "name": "Path Traversal: '.../...//'"
      },
      "notes": [
        {
          "category": "description",
          "text": "A low privileged remote attacker can upload a new or overwrite an existing python script by using a path traversal of the target filename in php resulting in a remote code execution. ",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "METZ CONNECT has released a new SW-Version 2.2.0. Install version 2.2.0 or later to remediate this vulnerability. Schedule the update at your next maintenance window. No workaround offers equivalent protection.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 8.8,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 8.8,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31003"
          ]
        }
      ],
      "title": "Possible arbitrary code execution"
    },
    {
      "cve": "CVE-2025-41737",
      "cwe": {
        "id": "CWE-284",
        "name": "Improper Access Control"
      },
      "notes": [
        {
          "category": "description",
          "text": "Due to webserver misconfiguration an unauthenticated remote attacker is able to read the source of php modules. ",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "METZ CONNECT has released a new SW-Version 2.2.0. Install version 2.2.0 or later to remediate this vulnerability. Schedule the update at your next maintenance window. No workaround offers equivalent protection.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 7.5,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31003"
          ]
        }
      ],
      "title": "Improper access control via php endpoint "
    }
  ]
}