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CVE-2016-3255

Estado: ModificadaAlta (7.5)—

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, and 4.6.1 allows remote attackers to read arbitrary files via XML data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, aka ".NET Information Disclosure Vulnerability."

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Microsoft — .net Framework

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2016-3255",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-07-13T01:59:16.657",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/91601",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1036291",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-091",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/91601",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1036291",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-091",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, and 4.6.1 allows remote attackers to read arbitrary files via XML data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, aka \".NET Information Disclosure Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6 y 4.6.1 permite a atacantes remotos leer archivos arbitrario a través de datos XML que contienen una declaración de entidad externa en conjunción con una referencia a entidad, relacionado con un caso XML External Entity (XXE), también conocida como \".NET Information Disclosure Vulnerability\"."
    }
  ],
  "lastModified": "2026-06-17T00:45:22.777",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "42A6DF09-B8E1-414D-97E7-453566055279"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E039CE1F-B988-4741-AE2E-5B36E2AF9688"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8EDC4407-7E92-4E60-82F0-0C87D1860D3A"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40B3A045-B08A-44E0-91BE-726753F6A362"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "280FE663-23BE-45D2-9B31-5F577E390B48"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FF0B660D-1F30-4D45-B98B-726EDB8CB90F"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/611.html\">CWE-611: Improper Restriction of XML External Entity Reference ('XXE')</a>",
  "sourceIdentifier": "secure@microsoft.com"
}