A Microsoft disponibilizou hoje as 15:00 (horário de Brasília) uma atualização Critica nível 2 no Windows Update.
Essa atualização se refere falha de segurança.

Microsoft Security Bulletin MS08-067 – Critical

Vulnerability in Server Service Could Allow Remote Code Execution (958644)

 

Affected Software

Operating System	Maximum Security Impact	Aggregate Severity Rating	Bulletins Replaced by this Update
Microsoft Windows 2000 Service Pack 4	Remote Code Execution	Critical	MS06-040
Windows XP Service Pack 2	Remote Code Execution	Critical	MS06-040
Windows XP Service Pack 3	Remote Code Execution	Critical	None
Windows XP Professional x64 Edition	Remote Code Execution	Critical	MS06-040
Windows XP Professional x64 Edition Service Pack 2	Remote Code Execution	Critical	None
Windows Server 2003 Service Pack 1	Remote Code Execution	Critical	MS06-040
Windows Server 2003 Service Pack 2	Remote Code Execution	Critical	None
Windows Server 2003 x64 Edition	Remote Code Execution	Critical	MS06-040
Windows Server 2003 x64 Edition Service Pack 2	Remote Code Execution	Critical	None
Windows Server 2003 with SP1 for Itanium-based Systems	Remote Code Execution	Critical	MS06-040
Windows Server 2003 with SP2 for Itanium-based Systems	Remote Code Execution	Critical	None
Windows Vista and Windows Vista Service Pack 1	Remote Code Execution	Important	None
Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1	Remote Code Execution	Important	None
Windows Server 2008 for 32-bit Systems*	Remote Code Execution	Important	None
Windows Server 2008 for x64-based Systems*	Remote Code Execution	Important	None
Windows Server 2008 for Itanium-based Systems	Remote Code Execution	Important	None

Download: http://www.microsoft.com/technet/security/Bulletin/MS08-067.mspx?pf=true