JScript 5.6 Security Update for Windows Server 2003 x64 (KB917344)

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An attacker may exploit a vulnerability in Windows Script Engine by constructing a Web page that, when visited by a user, runs code of the attacker’s choice with user credentials.
  • Note:There are multiple files available for this download.Once you click on the "Download" button, you will be prompted to select the files you need.


    File Name:



    Date Published:


    File Size:

    1.2 MB

    1.2 MB

    KB Articles: KB917344

    Security bulletins:MS06-023

      A vulnerability exists in Microsoft JScript. An attacker could exploit the vulnerability by constructing a Web page that, when visited by the user, would execute code of the attacker’s choice with user privileges. For more information, see Knowledge Base Article 917344.
  • Supported Operating System

    Windows Server 2003 x64 editions

    • The update available from this page is for JScript 5.6 on Windows Server 2003 x64. To determine which version of JScript is on your machine:

      1. Open the Windows Explorer

      2. Navigate to the \windows\system32 directory

      3. Right click on jscript.dll and choose "Properties"

      4. Choose the "Version" tab

      The version will be the first line of information. For example, after this patch is installed it will be If your version is 5.1 or 5.5, please use the appropriate link under Related Resources on the right side of this page.
      To download and install this patch:

      1. Click the Download link to start the download, or choose a different language from the drop-down list and click Go.

      2. Do one of the following:

      • To start the installation immediately, click Open or Run this program from its current location.

      • To copy the download to your computer for installation at a later time, click Save or Save this program to disk.

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