A Google Security engineer has not discovered a Windows zero-day flaw, but has also stated that Microsoft has a knack of treating outside researcher with great hosility.
Travis Ormandy , a Google Security engineer exposed the flaw of full disclosure, that could be used to crash PCs or gain additional access rights. The issue is less critical than other flaw as it is not a remotely exploitable one.
Ormandy said on full disclosure " I don't have much free time to work on Silly Microsoft code , so i'm looking for ideas on how to fix the final obstacle for exploitation ".
He is been working on it for month an according to a latter post , he has now a working exploit that "grants SYSTEM on all currently supported version of windows. "
Info : TheHacker News