{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)",
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in SIRIUS 3RV2921-5M could allow an attacker to cause a denial of service condition.\n\nSiemens has released a new version for SIRIUS 3RV2921-5M and recommends to update to the latest version.",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens\u0027 operational guidelines for Industrial Security (Download: \nhttps://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
        "title": "General Recommendations"
      },
      {
        "category": "general",
        "text": "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "productcert@siemens.com",
      "name": "Siemens ProductCERT",
      "namespace": "https://www.siemens.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-340240: Denial of Service Vulnerability in SIRIUS 3RV2921-5M - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-340240.html"
      },
      {
        "category": "self",
        "summary": "SSA-340240: Denial of Service Vulnerability in SIRIUS 3RV2921-5M - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-340240.json"
      }
    ],
    "title": "SSA-340240: Denial of Service Vulnerability in SIRIUS 3RV2921-5M",
    "tracking": {
      "current_release_date": "2025-06-10T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-340240",
      "initial_release_date": "2024-10-08T00:00:00Z",
      "revision_history": [
        {
          "date": "2024-10-08T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2024-12-10T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added SENTRON Powercenter 1100 as affected product; clarified that no fix is planned for SENTRON Powercenter 1000; updated product-specific CVSS vectors"
        },
        {
          "date": "2025-06-10T00:00:00Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Corrected the list of affected products from SENTRON Powercenter 1000 and 1100 to SIRIUS 3RV2921-5M"
        }
      ],
      "status": "interim",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.1",
                "product": {
                  "name": "SIRIUS 3RV2921-5M",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "SIRIUS 3RV2921-5M"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-6874",
      "cwe": {
        "id": "CWE-754",
        "name": "Improper Check for Unusual or Exceptional Conditions"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Prior to v7.4.0, Ember ZNet is vulnerable to a denial of service attack through manipulation of the NWK sequence number",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Mitigate through physical isolation",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V5.1 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109797242/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "title": "CVE-2023-6874"
    }
  ]
}