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CVE-2012-2546

Estado: ModificadaAlta (9.3)—

Una vulnerabilidad de uso después de liberación en Microsoft Internet Explorer 9 permite a atacantes remotos ejecutar código de su elección a través de un sitio web diseñado para tal fin que provoca el acceso a un objeto eliminado. Se trata de un problema también conocido como "Vulnerabilidad de uso después de liberación de Event Listener".

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 — Internet Explorer

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2012-2546",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2012-09-21T21:55:01.400",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/55645",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1027555",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.us-cert.gov/cas/techalerts/TA12-255A.html",
      "tags": [
        "US Government Resource"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-063",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/78757",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15652",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/55645",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1027555",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.us-cert.gov/cas/techalerts/TA12-255A.html",
      "tags": [
        "US Government Resource"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-063",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/78757",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15652",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use-after-free vulnerability in Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, aka \"Event Listener Use After Free Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de uso después de liberación en Microsoft Internet Explorer 9 permite a atacantes remotos ejecutar código de su elección a través de un sitio web diseñado para tal fin que provoca el acceso a un objeto eliminado. Se trata de un problema también conocido como \"Vulnerabilidad de uso después de liberación de Event Listener\"."
    }
  ],
  "lastModified": "2026-06-16T23:41:39.850",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C043EDDD-41BF-4718-BDCF-158BBBDB6360"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:9:beta1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C9C0811D-4112-4CCC-911F-1DE088773955"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:9:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F9AE7FF5-78C4-4AE4-89C4-0759820D57EB"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}