Microsoft expected to issue seven bulletins affecting all versions of its Windows operating system (OS), some Office components and also Mac OS X, through Silverlight and Office. The first bulletin will address a remote code execution vulnerability affecting Windows and Internet Explorer. Microsoft and other software vendors likely to release further patch updates soon, following the competition that concluded earlier this month, which saw security researchers break the security of a number of applications. In fact over the last three months, there has been an IE update every month.
Source: https://thehackernews.com/2013/03/its-patch-tuesday-microsoft-rolling-out.html