Medium
An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object.
Information disclosure
Microsoft
Refer to Microsoft advisory for the complete list of affected products and for respective patches.
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2020-1578