From gbhackers.com
Microsoft patched a critical 17-Year-old vulnerability with Windows DNS Server that can be triggered by an attacker with malicious DNS response.
The Windows DNS Server is an essential part of the Windows Domain environment and runs the DNS queries on Windows Server.
The vulnerability dubbed SIGRed (CVE-2020-1350) is wormable and it receives a CVSS base score 10/10, and it can be triggered by an attacker with malicious DNS response.