The kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allow local users to obtain sensitive information about kernel-object addresses, and consequently bypass the KASLR protection mechanism, via a crafted application, aka "Win32k Information Disclosure Vulnerability."