Microsoft Unpatched Vulnerabilities - ISC Master List
Many of the key currently unpatched vulnerabilities and their associated risk factors are being maintained here:
Microsoft Unpatched Vulnerabilities - ISC Master List
http://isc.sans.org/diary.html?storyid=1940
QUOTE: Vulnerabilities that are widely known and/or actively exploited are of great interest to our readers, here we try to keep an overview of them