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    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)",
      "tlp": {
        "label": "WHITE"
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    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Devices of the SIPROTEC 5 family contain a vulnerability related to secure client-initiated renegotiation. This could allow an unauthenticated attacker to cause a denial of service condition for the duration of the attack.\n\nSiemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid\u0027s reliability can thus be minimized by virtue of the grid design.\nSiemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. \nAs a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment.\n\nRecommended security guidelines can be found at:\nhttps://www.siemens.com/gridsecurity",
        "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"
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    "references": [
      {
        "category": "self",
        "summary": "SSA-552874: Denial of Service Vulnerability in SIPROTEC 5 Devices - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-552874.html"
      },
      {
        "category": "self",
        "summary": "SSA-552874: Denial of Service Vulnerability in SIPROTEC 5 Devices - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-552874.json"
      }
    ],
    "title": "SSA-552874: Denial of Service Vulnerability in SIPROTEC 5 Devices",
    "tracking": {
      "current_release_date": "2025-11-11T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
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      "id": "SSA-552874",
      "initial_release_date": "2022-12-13T00:00:00Z",
      "revision_history": [
        {
          "date": "2022-12-13T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2023-05-09T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added fix for multiple devices; Corrected affected products list"
        },
        {
          "date": "2023-09-12T00:00:00Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Added fix for SIPROTEC 5 6MD89 (CP300), SIPROTEC 5 7KE85 (CP300), SIPROTEC 5 7ST85 (CP300) and SIPROTEC 5 7ST86 (CP300)"
        },
        {
          "date": "2024-03-12T00:00:00Z",
          "legacy_version": "1.3",
          "number": "4",
          "summary": "Adjusted fix version for SIPROTEC 5 6MD89 (CP300), SIPROTEC 5 7KE85 (CP300), SIPROTEC 5 7ST85 (CP300) and SIPROTEC 5 7ST86 (CP300)"
        },
        {
          "date": "2024-05-14T00:00:00Z",
          "legacy_version": "1.4",
          "number": "5",
          "summary": "Added fix for SIPROTEC 5 7SJ81 (CP100), SIPROTEC 5 7SJ82 (CP100), SIPROTEC 5 7SK82 (CP100), SIPROTEC 5 Communication Module ETH-BA-2EL (installed on CP100 devices), SIPROTEC 5 Communication Module ETH-BB-2FO (installed on CP100 devices); Clarified that currently no fix is available for SIPROTEC 5 7SA82 (CP100), SIPROTEC 5 7SD82 (CP100), SIPROTEC 5 7SL82 (CP100), SIPROTEC 5 7UT82 (CP100)"
        },
        {
          "date": "2025-11-11T00:00:00Z",
          "legacy_version": "1.5",
          "number": "6",
          "summary": "Added fix for SIPROTEC 5 7SA82 (CP100), SIPROTEC 5 7SD82 (CP100), SIPROTEC 5 7SL82 (CP100) and SIPROTEC 5 7UT82 (CP100)"
        }
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              },
              {
                "category": "product_version_range",
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            ],
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          },
          {
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          }
        ],
        "category": "vendor",
        "name": "Siemens"
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    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-45044",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Affected devices do not properly restrict secure client-initiated renegotiations within the SSL and TLS protocols. This could allow an attacker to create a denial of service condition on the ports 443/tcp and 4443/tcp for the duration of the attack.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6",
          "7",
          "8",
          "9",
          "10",
          "11",
          "12",
          "13",
          "14",
          "15",
          "16",
          "17",
          "18",
          "19",
          "20",
          "21",
          "22",
          "23",
          "24",
          "25",
          "26",
          "27",
          "28",
          "29",
          "30",
          "31",
          "32",
          "33",
          "34",
          "35",
          "36",
          "37",
          "38",
          "39",
          "40",
          "41",
          "42",
          "43",
          "44",
          "45",
          "46",
          "47",
          "48",
          "49",
          "50",
          "51",
          "52",
          "53",
          "54",
          "55",
          "56",
          "57",
          "58",
          "59",
          "60",
          "61",
          "62",
          "63",
          "64",
          "65",
          "66",
          "67",
          "68",
          "69"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Restrict access to port 443/tcp and 4443/tcp to trusted IP addresses only",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12",
            "13",
            "14",
            "15",
            "16",
            "17",
            "18",
            "19",
            "20",
            "21",
            "22",
            "23",
            "24",
            "25",
            "26",
            "27",
            "28",
            "29",
            "30",
            "31",
            "32",
            "33",
            "34",
            "35",
            "36",
            "37",
            "38",
            "39",
            "40",
            "41",
            "42",
            "43",
            "44",
            "45",
            "46",
            "47",
            "48",
            "49",
            "50",
            "51",
            "52",
            "53",
            "54",
            "55",
            "56",
            "57",
            "58",
            "59",
            "60",
            "61",
            "62",
            "63",
            "64",
            "65",
            "66",
            "67",
            "68",
            "69"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "2",
            "4",
            "8",
            "12",
            "13",
            "15",
            "19",
            "20",
            "22",
            "28",
            "30",
            "34",
            "38",
            "40",
            "42",
            "44",
            "52",
            "54",
            "56",
            "59",
            "62",
            "65"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.50 or later version",
          "product_ids": [
            "1",
            "3",
            "5",
            "7",
            "14",
            "16",
            "21",
            "23",
            "29",
            "31",
            "35",
            "39",
            "41",
            "43",
            "48",
            "49",
            "53",
            "55",
            "57",
            "58",
            "60",
            "61"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109814150/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.50 or later version",
          "product_ids": [
            "11",
            "18",
            "25",
            "27",
            "33",
            "37",
            "47",
            "51"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757433/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.50 or later version",
          "product_ids": [
            "68"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740816/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.50 or later version",
          "product_ids": [
            "69"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109796884/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.64 or later version",
          "product_ids": [
            "6",
            "9",
            "45",
            "46"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109742950/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V8.90 or later V8.xx version",
          "product_ids": [
            "10",
            "17",
            "36",
            "50"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V8.89 or later V8.xx version",
          "product_ids": [
            "24",
            "26",
            "32"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.50 or later version",
          "product_ids": [
            "63",
            "66"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740816/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V8.89 or later V8.xx version",
          "product_ids": [
            "64",
            "67"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740816/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:T/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12",
            "13",
            "14",
            "15",
            "16",
            "17",
            "18",
            "19",
            "20",
            "21",
            "22",
            "23",
            "24",
            "25",
            "26",
            "27",
            "28",
            "29",
            "30",
            "31",
            "32",
            "33",
            "34",
            "35",
            "36",
            "37",
            "38",
            "39",
            "40",
            "41",
            "42",
            "43",
            "44",
            "45",
            "46",
            "47",
            "48",
            "49",
            "50",
            "51",
            "52",
            "53",
            "54",
            "55",
            "56",
            "57",
            "58",
            "59",
            "60",
            "61",
            "62",
            "63",
            "64",
            "65",
            "66",
            "67",
            "68",
            "69"
          ]
        }
      ],
      "title": "CVE-2022-45044"
    }
  ]
}