{
  "id": "CVE-2021-30186",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-05-25T13:15:17.677",
  "lastModified": "2021-05-26T13:18:48.713",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "CODESYS V2 runtime system SP before 2.4.7.55 has a Heap-based Buffer Overflow."
    },
    {
      "lang": "es",
      "value": "CODESYS V2 runtime system SP versiones anteriores a 2.4.7.55, presenta un Desbordamiento del B\u00fafer en la regi\u00f3n Heap de la memoria"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:codesys:plcwinnt:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2.4.7.55",
              "matchCriteriaId": "9E0183D6-64B3-40AE-946A-585A3C841087"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:codesys:runtime_toolkit:*:*:*:*:*:*:x86:*",
              "versionEndExcluding": "2.4.7.55",
              "matchCriteriaId": "93332F55-63E0-469B-B983-BE49D37F51C9"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://customers.codesys.com/index.php",
      "source": "cve@mitre.org",
      "tags": [
        "Permissions Required",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14725&token=08691519ef764b252630759eff925890176ecd78&download=",
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}