Microsoft plans to release five security bulletins on June Patch Tuesday next week. A critical bulletin affects all versions of Internet Explorer, three important bulletins close security holes in Windows. Another important bulletin addresses vulnerabilities in Office 2003 Service Pack 3 and Office for Mac 2011. Microsoft’s advance notification doesn’t mention whether it will also patch privilege escalation hole in Windows that was disclosed by Google security expert Tavis Ormandy in May. A working exploit for that vulnerability is already in circulation, a working exploit.”]