It was first publicized last week, but now Microsoft believes that an unpatched security hole that affects all versions of Internet Explorer represents a greater danger than was originally believed.
The company is reportedly working on an emergency patch, but is recommending setting the internet zone security setting to ‘high’ and disabling Ole32db.dll in access control lists (ACL) to offer the best defense against attack.
In the Microsoft Malware Protection Center blog, the company wrote:

