Microsoft Security Bulletin MS09-001 is rated as ‘Critical’ for Windows 2000, Windows XP and Windows Server 2003 and is rated as ‘Moderate’ for Windows Vista and Windows Server 2008. Also comes with an updated version of Malicious Software Removal Tool (MSRT), that remove the Win32/Conficker and Win32/Banload families of malware. Impacted customers will be interested in the addition of Win32/Conficker.B; which has had a significant and sudden impact on some customers.
Windows 7 is affected only by the SMB Validation Denial of Service Vulnerability (CVE-2008-4114), and will be addressed in the next public release for Windows 7, reports MSRC Blog.
More info: SVRD Blog