Bulletin Severity Rating:Critical – This security update addresses a privately reported vulnerability for Microsoft software. This security update is rated Critical for all supported editions of Microsoft Windows 2000 and Windows XP, Important for all supported editions of Windows Vista and Windows 7, Moderate for all supported editions of Windows Server 2003, and Low for all supported editions…

Read more at: Microsoft Security Bulletins

Bulletin Severity Rating:Critical – This security update addresses a privately reported vulnerability for Microsoft software. This security update is rated Critical for all supported editions of Microsoft Windows 2000 and Windows XP, Important for all supported editions of Windows Vista and Windows 7, Moderate for all supported editions of Windows Server 2003, and Low for all supported editions of Windows Server 2008 and Windows Server 2008 R2.

Read more at: Microsoft Security Bulletins