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CVE-2011-1256

Status: ModifiedHigh (9.3)—

Microsoft Internet Explorer 6 through 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, aka "DOM Modification 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)

CWEs

References

Raw JSON (NVD)

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  "id": "CVE-2011-1256",
  "cveTags": [],
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          "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",
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        "acInsufInfo": false,
        "impactScore": 10,
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        "obtainAllPrivilege": false,
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  "published": "2011-06-16T20:55:01.793",
  "references": [
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      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-050",
      "tags": [
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        "Vendor Advisory"
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  "lastModified": "2026-06-16T23:29:02.060",
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