The photo-decoder implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly initialize memory for rendering of JXR images, which allows remote attackers to obtain sensitive information from process memory via a crafted web site, aka "JPEG XR Parser Information Disclosure Vulnerability."