An identified security issue in the Microsoft® Windows® shell could allow an attacker to compromise a Microsoft Windows XP-based system and gain control over it. You can help protect your computer by installing this update. The Windows shell provides the basic framework of the Windows user interface experience. It is most familiar to users as the Windows desktop. This issue affects Windows XP only. Users running earlier versions of Windows do not need this update.

For more information and patch availability: 329390