Next week, Microsoft will releases six updates for Windows as part of this monthly security patch, also known as Tuesday patch. According to the company’s Advanced notification for the July 2007 security bulletin on July 10 Microsoft said three of the six updates are rated as “critical”.

In the company’s rating system “critical” means the patched vulnerabilities may be exploited remotely, without user’s intervention.

The first patch rated as “critical” fixes a remote code execution vulnerability in Microsoft Excel. The second will fix Windows 2000 Server and Windows Server 2003, and the third one will patch .Net Framework. This last patch also requires restarting the system.

The other three updates, two rated as “important” will fix holes in Publisher 2007 and Windows XP Professional SP2 that could lead to compromised or stolen data. The last one, ranked “moderate”, is limited to Windows Vista and has the potential to result in information disclosure.

Along with Tuesday’s update, Microsoft will also release an updated version of the Microsoft Malicious Software Removal Tool.

Last month, Microsoft released security updates for 15 vulnerabilities in Windows, Internet Explorer, Windows Vista and other bundled products.