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CVE-2011-1345

Status: ModifiedHigh (9.3)—

Microsoft Internet Explorer 6, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, as demonstrated by Stephen Fewer as the first of three chained vulnerabilities during a Pwn2Own competition at CanSecWest 2011, aka "Object Management Memory Corruption Vulnerability."

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Microsoft — Internet Explorer

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2011-1345",
  "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
      }
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  },
  "affected": [
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      "affectedData": [
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          "versions": [
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  ],
  "published": "2011-03-10T20:55:01.313",
  "references": [
    {
      "url": "http://dvlabs.tippingpoint.com/blog/2011/02/02/pwn2own-2011",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://twitter.com/aaronportnoy/statuses/45642180118855680",
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    {
      "url": "http://twitter.com/msftsecresponse/statuses/45646985998516224",
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    {
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      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/46821",
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    {
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      "source": "cve@mitre.org"
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    {
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      "tags": [
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    {
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    {
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      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/66062",
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12228",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://threatpost.com/en_us/blogs/pwn2own-winner-stephen-fewer-031011",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Internet Explorer 6, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, as demonstrated by Stephen Fewer as the first of three chained vulnerabilities during a Pwn2Own competition at CanSecWest 2011, aka \"Object Management Memory Corruption Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad sin especificar en Microsoft Internet Explorer 8 en Windows 7 permite a atacantes remotos ejecutar código arbitrario a través de vectores de ataque desconocidos, como ha demostrado Stephen Fewer con la primera de las tres vulnerabilidades encadenadas durante el concurso Pwn2Own en la CanSecWest 2011."
    }
  ],
  "lastModified": "2026-06-16T23:29:11.753",
  "configurations": [
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      "operator": "AND"
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  "sourceIdentifier": "cve@mitre.org"
}