Microsoft releases Out-of-band Security Update for Internet Explorer
For instance, XP users running IE8 can download the update from Security Update for Internet Explorer 8 for Windows XP. This security update resolves a publicly disclosed vulnerability in Internet Explorer. It addresses the vulnerability by modifying the way that Internet Explorer handles objects in memory.
Get all the info you need about this update from here - https://technet.microsoft.com/library/security/ms14-021