Microsoft issued six patches, four of which were critical in April 2012 software updates. The patches affect Microsoft Windows, Internet Explorer, the.NET Framework, Office,. Office, and. Server Software, Developer Tools, and Forefront United Access Gateway. The last critical patch, MS12-027, has. do with a vulnerability in Windows Common Controls that could also lead to remote code execution. If unpatched, it is possible for an attacker to gain the same user rights as the current user. As always, users with fewer rights will be less impacted.
Source: https://threatpost.com/microsoft-six-bulletins-four-critical-april-patch-041012/76427/