3 critical security bulletins from Microsoft

Microsoft Security Bulletins were issued today
1 Microsoft Security Bulletin affecting Microsoft Windows - Internet Explorer - Critical
1 Microsoft Security Bulletin affecting Microsoft Office - Excel - Critical
1 Microsoft Security Bulletin affecting Microsoft Office - Outlook - Critical
1 Microsoft Security Bulletin affecting Microsoft Office 2003 Brazilian Portuguese Grammar Checker Vulnerability - Important

The critical vulnerabilities affect the following: operating systems:
Microsoft Windows 2000/XP/2003/Server 2003/software
Microsoft Office 2000/XP/2003
Microsoft Works Suite 2004/2005
Apple Mac
Microsoft Office 2004 for Mac
Microsoft Office v. X for Mac