For Windows Vista, Windows XP, Windows Server 2003, Windows Server 2008, this update gives a per format switch to control the parsing of each file format in GDI+. This new feature enables you to control the parsing of different codecs. The idea behind the feature’s to control the attack surface area. This feature is controlled by using different registry entries that’re part of this update. By changing these registry entries, you can control which images are parsed and rendered and which images’re rejected in GDI+. For example, you can select to parse and render Joint Photographic Experts Group (JPEG) images, but block Tagged Image File Format (TIFF) images. 

Download: KB958911