Add or Remove Programs entry for Security Update for Windows XP (KB918439). This critical security update for Windows XP addresses a vulnerability in ART Image Rendering that could allow remote code execution.

There is a remote code execution vulnerability in the way that Windows handles ART images. An attacker could exploit the vulnerability by constructing a specially crafted ART image that could potentially allow remote code execution if a user visited a Web site or viewed a specially crafted e-mail message. An attacker who successfully exploited this vulnerability could take complete control of an affected system.