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CVE-2009-1531

Status: ModifiedHigh (9.3)—

Microsoft Internet Explorer 7 for Windows XP SP2 and SP3; 7 for Server 2003 SP2; 7 for Vista Gold, SP1, and SP2; and 7 for Server 2008 SP2 allows remote attackers to execute arbitrary code via frequent calls to the getElementsByTagName function combined with the creation of an object during reordering of elements, followed by an onreadystatechange event, which triggers an access of an object that (1) was not properly initialized or (2) is deleted, aka "HTML Object 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-2009-1531",
  "cveTags": [],
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        "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": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
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    }
  ],
  "published": "2009-06-10T18:30:00.517",
  "references": [
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      "url": "http://osvdb.org/54950",
      "source": "secure@microsoft.com"
    },
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    },
    {
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    },
    {
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      "tags": [
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      "source": "secure@microsoft.com"
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    {
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      "tags": [
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      "source": "secure@microsoft.com"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Internet Explorer 7 for Windows XP SP2 and SP3; 7 for Server 2003 SP2; 7 for Vista Gold, SP1, and SP2; and 7 for Server 2008 SP2 allows remote attackers to execute arbitrary code via frequent calls to the getElementsByTagName function combined with the creation of an object during reordering of elements, followed by an onreadystatechange event, which triggers an access of an object that (1) was not properly initialized or (2) is deleted, aka \"HTML Object Memory Corruption Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Microsoft Internet Explorer 7 para Windows XP SP2 y SP3; 7 para Server 2003 SP2; 7 para Vista Gold, SP1 y SP2; y 7 para Server 2008 SP2 permite a los atacantes remotos ejecutar código arbitrario por medio de llamadas frecuentes a la función getElementsByTagName combinada con la creación de un objeto durante el reordenamiento de elementos, seguida por un evento onReadyStateChange, que desencadena un acceso de un objeto que (1) no se inicializó apropiadamente o (2) se elimina, también se conoce como \"HTML Object Memory Corruption Vulnerability\"."
    }
  ],
  "lastModified": "2026-06-16T23:07:28.013",
  "configurations": [
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}