...from:
http://www.microsoft.com/en-us/download/details.aspx?id=44329


Office

Microsoft Office for Mac 2011 14.4.5 Update

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This update fixes critical issues and also helps to improve security. It includes fixes for vulnerabilities that an attacker can use to overwrite the contents of your computer's memory with malicious code.
  • Details
    Version:

    14.4.5

    File Name:

    Office2011-1445Update_EN-US.dmg

    Date Published:

    10/14/2014

    File Size:

    113.6 MB

      This update fixes critical issues and also helps to improve security. It includes fixes for vulnerabilities that an attacker can use to overwrite the contents of your computer's memory with malicious code. For more information about this update, please visit the Microsoft Web site.

      Applies to: Office 2011, Office 2011 Home and Business Edition, Word 2011, Excel 2011, PowerPoint 2011, Outlook 2011, Office for Mac Standard 2011 Edition, Microsoft Office for Mac Home & Student 2011, and Microsoft Office for Mac Academic 2011 

      Known issues for installation of Office 2011
  • System Requirements
    Supported Operating System
    Apple Macintosh, Mac OS X
      • Operating System Versions: Mac OS X version 10.5.8 or a later version of Mac OS

        Note  To verify that your computer meets these minimum requirements, on the Apple menu, click About This Mac.
      • Microsoft Office for Mac 2011 Service Pack 1 (14.1.0): You can download this update for free from the Microsoft Web Site.

        Note To verify that you have installed this update, you can open any Microsoft Office 2011 application to check the version number. For example, open Word, and then on the Word menu, click About Word. In the dialog box, compare the version number next to Latest Installed Update.