updated 7/12/2011 3:46:17 PM ET 2011-07-12T19:46:17

Microsoft today (July 12) issued patches for 22 security vulnerabilities in its popular software, including Windows and Office.

( is a joint venture of Microsoft and NBC Universal.)

The updates for Microsoft Windows are labeled "critical," meaning an attacker could remotely execute malicious code or gain unauthorized levels of control over infected Windows Vista or Windows 7 systems.

Other programs covered by the security bulletins include Microsoft Office and Microsoft Visio 2003 Service Pack 3, Microsoft wrote on its TechNet blog.

The fixes, part of the software giant's monthly Patch Tuesday, were released midday today. To download them, visit Microsoft's Download Center on its website — but you really should have Automatic Updates turned on.

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