{
  "GSD": {
    "alias": "CVE-2021-31340",
    "description": "A vulnerability has been identified in SIMATIC RF166C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF185C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF186C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF186CI (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF188C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF188CI (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF360R (All versions), SIMATIC RF615R (All versions \u003e V3.0), SIMATIC RF680R (All versions \u003e V3.0), SIMATIC RF685R (All versions \u003e V3.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.",
    "id": "GSD-2021-31340"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-31340"
      ],
      "details": "A vulnerability has been identified in SIMATIC RF166C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF185C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF186C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF186CI (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF188C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF188CI (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF360R (All versions \u003c V2.0), SIMATIC Reader RF610R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF610R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF610R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R FCC (All versions \u003e V3.0 \u003c V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.",
      "id": "GSD-2021-31340",
      "modified": "2023-12-13T01:23:13.453524Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "productcert@siemens.com",
        "ID": "CVE-2021-31340",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
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                    "product_name": "SIMATIC RF166C",
                    "version": {
                      "version_data": [
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                          "version_value": "All versions \u003e V1.1 and \u003c V1.3.2"
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                          "version_value": "All versions \u003e V1.1 and \u003c V1.3.2"
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                    "product_name": "SIMATIC RF186C",
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                        {
                          "version_value": "All versions \u003e V1.1 and \u003c V1.3.2"
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                    }
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                    "product_name": "SIMATIC RF186CI",
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                        {
                          "version_value": "All versions \u003e V1.1 and \u003c V1.3.2"
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                          "version_value": "All versions \u003e V1.1 and \u003c V1.3.2"
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                    }
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                      "version_data": [
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                    }
                  },
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
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                      "version_data": [
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
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                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF615R CMIIT",
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
                        }
                      ]
                    }
                  },
                  {
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                      "version_data": [
                        {
                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
                        }
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                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF615R FCC",
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
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                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF650R ARIB",
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                      "version_data": [
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
                        }
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                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF650R CMIIT",
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                      "version_data": [
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
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                  },
                  {
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
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                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF650R FCC",
                    "version": {
                      "version_data": [
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
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                      ]
                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF680R ARIB",
                    "version": {
                      "version_data": [
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF680R CMIIT",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF680R ETSI",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF680R FCC",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
                        }
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                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF685R ARIB",
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                      "version_data": [
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                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
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                    }
                  },
                  {
                    "product_name": "SIMATIC Reader RF685R CMIIT",
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                      "version_data": [
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                  },
                  {
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                    "version": {
                      "version_data": [
                        {
                          "version_value": "All versions \u003e V3.0 \u003c V4.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Siemens"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "lang": "eng",
            "value": "A vulnerability has been identified in SIMATIC RF166C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF185C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF186C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF186CI (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF188C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF188CI (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF360R (All versions \u003c V2.0), SIMATIC Reader RF610R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF610R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF610R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R FCC (All versions \u003e V3.0 \u003c V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation."
          }
        ]
      },
      "problemtype": {
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          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-400: Uncontrolled Resource Consumption"
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      "references": {
        "reference_data": [
          {
            "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf",
            "refsource": "MISC",
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf"
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      }
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          "ASSIGNER": "productcert@siemens.com",
          "ID": "CVE-2021-31340"
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
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              "lang": "en",
              "value": "A vulnerability has been identified in SIMATIC RF166C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF185C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF186C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF186CI (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF188C (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF188CI (All versions \u003e V1.1 and \u003c V1.3.2), SIMATIC RF360R (All versions \u003c V2.0), SIMATIC Reader RF610R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF610R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF610R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF615R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF650R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF680R FCC (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R ARIB (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R CMIIT (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R ETSI (All versions \u003e V3.0 \u003c V4.0), SIMATIC Reader RF685R FCC (All versions \u003e V3.0 \u003c V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation."
            }
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        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-400"
                },
                {
                  "lang": "en",
                  "value": "CWE-400"
                }
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        "references": {
          "reference_data": [
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf",
              "refsource": "MISC",
              "tags": [
                "Mitigation",
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf"
            }
          ]
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "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"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-10-06T17:28Z",
      "publishedDate": "2021-06-08T20:15Z"
    }
  }
}