Along with two other updates for users of Windows 98, Millennium, 2000, XP and 2003. This months regular security updates release contains critical security updates for the last three versions of Microsoft Outlook - the key component in most peoples PIM synchronisation activities.
If exploited through Outlook a hacker "who successfully exploited this vulnerability could take complete control of the client workstation. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights."

Download: Outlook 2000 SP3 | Outlook XP SP3 | Outlook 2003 SP1
View: Office Patching Guides

View: Microsoft January 2006 Security Bulletin