Affected: Microsoft Windows 10 Version 2004, Microsoft Windows 10 Version 1803, Microsoft Windows 10 Version 1809, Microsoft Windows 10 Version 1909, Microsoft Windows 10 Version 1709 for 32-bit Systems, Microsoft Windows 10 Version 1709, Microsoft Windows 10 Version 1903 for 32-bit Systems, Microsoft Windows 10 Version 1903 for x64-based Systems, Microsoft Windows 10 Version 1903 for ARM64-based Systems, Microsoft Windows 10 Version 1507 and 1 more

An information disclosure vulnerability exists when the win32k component improperly provides kernel information. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how win32k handles objects in memory.