The security update for July 2007 includes three updates for Microsoft Windows, and one for .NET Framework.
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Bulletin Description 
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Impact 
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Bulletin Rating 
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Vulnerability in Windows Active Directory Could Allow Remote Code Execution (926122)
  
Affected Software:
 
- Windows 2000 Service Pack 4
 
- Windows Server 2003 Service Pack 1, and Windows Server 2003 Service Pack 2
 
- Windows Server 2003 with SP1 for Itanium-based Systems, and Windows Server 2003 with SP2 for Itanium-based Systems 
 
- Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2
 
  
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 Remote Code Execution 
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 Critical 
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Vulnerabilities in .NET Framework Could Allow Remote Code Execution (931212)
  
Affected Software:
 
- Microsoft .NET Framework 1.0:
 
Microsoft Windows 2000 Service Pack 4 
Windows XP Service Pack 2 
Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 
Windows XP Tablet PC Edition 2005 and Windows XP Media Center Edition 2005 
Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 
Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems 
Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 
Windows Vista 
 - Microsoft .NET Framework 1.1:
 
Microsoft Windows 2000 Service Pack 4 
Windows XP Service Pack 2 
Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 
Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 
Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 
Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems 
Windows Vista 
Windows Vista x64 Edition 
 - Microsoft .NET Framework 2.0:
 
Microsoft Windows 2000 Service Pack 4 
Windows XP Service Pack 2 
Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 
Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 
Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 
Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems 
Windows Vista 
Windows Vista x64 Edition 
 
  
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 Remote Code Execution 
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 Critical 
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Vulnerability in Microsoft Internet Information Services Could Allow Remote Code Execution (939373)
  
Affected Software:
 
- Windows XP Service Pack 2
 
  
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 Remote Code Execution 
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 Important 
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Vulnerability in Windows Vista Firewall Could Allow Information Disclosure (935807)
  
Affected Software: 
 
- Windows Vista
 
- Windows Vista x64 Edition
 
  
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 Information Disclosure 
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 Moderate 
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