Microsoft discovered a vulnerability in Internet Explorer, which could allow an attacker to access your computer remotely and execute arbitrary code.
For more information, please read the Microsoft article Vulnerability in Internet Explorer Could Allow Remote Code Execution: https://technet.microsoft.com/en-US/library/security/2963983
Affected Versions: Internet Explorer 6, Internet Explorer 7, Internet Explorer 8, Internet Explorer 9, Internet Explorer 10, and Internet Explorer 11
Security update available
Microsoft has released a security update that addresses this issue. This update is being distributed via Windows Update. For more information, please read Microsoft Security Bulletin MS14-021 - Critical at the following link: https://technet.microsoft.com/library/security/ms14-021
Most customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.
For customers who do not have automatic updating enabled, the steps in "Turn automatic updating on or off" can be used to enable automatic updating.
For customers who wish to manually download and install the update themselves, please refer to the link below which provides links to download the appropriate security update based on your version of Windows OS and Internet Explorer: https://technet.microsoft.com/library/security/ms14-021#ID0EYC
Using Windows XP and older versions of the Windows OS?
Unsupported versions of Windows no longer receive software updates from Windows Update. However, for this specific security update, customers using certain versions of Windows XP will receive the update via Windows Update. They can also choose to manually download and install the security update from Microsoft.
For more information regarding supported Windows OS and affected versions of Internet Explorer, please refer to the following link to see the list of supported versions: https://technet.microsoft.com/library/security/ms14-021#ID0EYC