Yes, it's almost the end of the month and Microsoft released more updates, based on an error found that could allow a remote hack to authenticate, could compromise your system, and gain control over it.

Updates are for systems: XP, Vista, Server and 7.

Protect yourself:

Security Update for Windows 2000 (KB958644)
Security Update for Windows XP (KB958644)
Security update for Windows XP x64 (KB958644)
Security Update for Windows Vista (KB958644)
Security update for Windows Vista x64 (KB958644)
Security Update for Windows 7 Beta (KB958644)
Security Update for Windows 7 Beta x64 (KB958644)
Security Update for Windows 7 Beta IA64 (KB958644)
Security Update for Windows Server 2003 (KB958644)
Security update for Windows Server 2003 x64 (KB958644)
Security Update for Windows Server 2003 IA64 (KB958644)
Security update for Windows Server 2008 (KB958644)
Security update for Windows Server 2008 x64 (KB958644)
Security update for Windows Server 2008 IA64 (KB958644)

Source: Baboo