Microsoft has released three unscheduled security updates for vulnerabilities found in Internet Explorer, Visual Studio active template libraries and Microsoft active template library.

These are unscheduled patches and should be applied immediately if you are using any of the above products.

These patches will be automatically pushed to Windows Update, if you want to learn more about them here are the Microsoft knowledgebase articles.

• KB972260 – MS09-034: Cumulative security update for Internet Explorer
• KB973882 – Microsoft Security Advisory: Vulnerabilities in Microsoft Active Template Library (ATL) could allow remote code execution
• KB969706 – MS09-035: Vulnerabilities in Visual Studio Active Template Libraries could allow remote code execution

You can learn more about the security updates and bulletins.