Microsoft today issued two bulletins fixing three holes in Windows, including one rated critical for Windows XP, Vista, and Windows 7 as part of Patch Tuesday.

"We are not aware of proof-of-concept code or of any active attacks seeking to exploit the vulnerabilities addressed in this month's release," the company wrote in a Microsoft Security Response Center blog post.

The critical vulnerability is addressed in Bulletin MS11-002. The bulletin fixes the critical hole and an "important" vulnerability, both in Microsoft Data Access Components, that could allow an attacker to take over the computer if a user merely viewed a malicious Web page.

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