Internet Explorer Security Update


Microsoft released a security bulletin (out-of-band) to address a vulnerability in Internet Explorer on all currently supported versions of Windows. The bulletin was released at approximately 10 A.M. Pacific Time (6pm GMT) on Wednesday, December 17, 2008.


This security update was released outside of the usual monthly security bulletin release cycle in an effort to protect customers. Microsoft recommends customers prepare their systems and networks to apply this security bulletin immediately to help ensure that their computers are protected from attempted criminal attacks. For more information about security updates, visit


The purpose of this notification is to assist customers with resource planning for this security bulletin release. The information offered in this notification is purposely general in nature to provide enough information for customers to plan for deployment without disclosing vulnerability details or other information that could put them at risk.


Anyone believed to have been affected can visit: and should contact the Gardaí.


Microsoft continues to encourage customers to follow the “Protect Your Computer” guidance of enabling a firewall, applying all software updates, and installing anti-virus and anti-spyware software. Additional information can be found at:







Bulletin Identifier:                          Windows Bulletin, Internet Explorer


Maximum Severity Rating:           Critical


Impact of Vulnerability:                 Remote Code Execution


Detection:                                        Microsoft Baseline Security Analyzer can detect whether your computer system requires this update.


Restart Requirement:                   May require restart.


Affected Software:                        Microsoft Windows, Internet Explorer


The full version of the Microsoft Security Bulletin Advance Notification for this month can be found here:


Although we do not anticipate any changes, the information provided in this summary is subject to change until the release. At this time, no additional information on this bulletin such as details regarding severity or details regarding the vulnerability will be made available until the bulletin is published.






We strive to provide you with accurate information in Web-based content. Microsoft’s security content posted to the Web is occasionally updated to reflect late-breaking information. If this results in an inconsistency between the information here and the information in Microsoft’s Web-based security content, the information in Microsoft’s Web-based security content is authoritative.



If you have any questions regarding this alert, please contact your local (Technical) Account Manager, or Ciara Murphy from the local Response Management Team – contactable via and +353 1 7064014.


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