FKIE_CVE-2009-1920

Vulnerability from fkie_nvd - Published: 2009-09-08 22:30 - Updated: 2026-06-16 23:08
Severity
Summary
The JScript scripting engine 5.1, 5.6, 5.7, and 5.8 in JScript.dll in Microsoft Windows, as used in Internet Explorer, does not properly load decoded scripts into memory before execution, which allows remote attackers to execute arbitrary code via a crafted web site that triggers memory corruption, aka "JScript Remote Code Execution Vulnerability."
References
secure@microsoft.comhttp://www.us-cert.gov/cas/techalerts/TA09-251A.htmlUS Government Resource
secure@microsoft.comhttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-045
secure@microsoft.comhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6316
af854a3a-2127-422b-91ae-364da2661108http://www.us-cert.gov/cas/techalerts/TA09-251A.htmlUS Government Resource
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-045
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6316
Impacted products
Vendor Product Version
microsoft windows_2000 -
microsoft windows_server_2003 *
microsoft windows_server_2008 *
microsoft windows_server_2008 -
microsoft windows_server_2008 -
microsoft windows_server_2008 -
microsoft windows_server_2008 -
microsoft windows_server_2008 -
microsoft windows_vista *
microsoft windows_vista *
microsoft windows_vista *
microsoft windows_vista -
microsoft windows_vista -
microsoft windows_vista -
microsoft windows_xp *
microsoft windows_xp -
microsoft windows_xp -
To clipboard 

{
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    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "configurations": [
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The JScript scripting engine 5.1, 5.6, 5.7, and 5.8 in JScript.dll in Microsoft Windows, as used in Internet Explorer, does not properly load decoded scripts into memory before execution, which allows remote attackers to execute arbitrary code via a crafted web site that triggers memory corruption, aka \"JScript Remote Code Execution Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "El motor de secuencias de comandos JScript v5.1, v5.6, v5.7, y v5.8 en JScript.dll en Microsoft Windows, utilizado en Internet Explorer, no carga apropiadamente dentro de  memoria secuencias de comandos decodificada o  anteriores a la ejecuci\u00f3n, lo que permite a los atacantes remoto ejecutar arbitrariamente c\u00f3digo a trav\u00e9s de una p\u00e1gina web manipulada que lanza una corrupci\u00f3n de memoria, tambi\u00e9n conocido como \"Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo JScript\"."
    }
  ],
  "id": "CVE-2009-1920",
  "lastModified": "2026-06-16T23:08:21.923",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 9.3,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ]
  },
  "published": "2009-09-08T22:30:00.313",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
        "US Government Resource"
      ],
      "url": "http://www.us-cert.gov/cas/techalerts/TA09-251A.html"
    },
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      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-045"
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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