Microsoft released patches for two critical flaws on Tuesday, two days after security researchers found two more vulnerabilities in the Windows Meta File (WMF) format. The patches follow last week’s emergency patch for a severe vulnerability in the WMF format, bringing the software giant’s total to three for January. The two fixes released on Tuesday close security holes in Windows’ handling of Web fonts and Microsft Outlook e-mail client’s and Exchange server’s handling of attachments using the Transport Neutral Encapsulation Format (TNEF). Full Story