<p>An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys. An attacker who successfully exploited the vulnerability could gain elevated privileges on a targeted system.</p> <p>To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted script or application.</p> <p>The update addresses the vulnerability by correcting how Windows handles calls to Win32k.</p>
https://www.tenable.com/blog/microsoft-s-september-2020-patch-tuesday-addresses-129-cves
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1152