Every month on the second Tuesday Microsoft releases patches or fixes for their software. These patches close vulnerabilities, fixes bugs, and repair other issues found in the operating systems and programs such as Internet Explorer, Office, and business software.
February’s Patch Tuesday contains patches for 24 vulnerabilities in Internet Explorer which are rated as critical. The most serious vulnerabilities are those that allow remote code execution, such as that addressed by Microsoft Security Bulletin MS14-007. Simply viewing a webpage boobytrapped with that critical vulnerability could silently run malware on your computer, infecting your PC.
Most users computers are automatically updated are will download and install these patches without you having to do anything. However, if you are not sure if you are getting these updates from Microsoft then follow these steps to set up your computer to automatically install security updates. Windows AutoUpdate. Source: http://technet.microsoft.com/en-us/security/bulletin/ms14-007