Microsoft is urging customers to patch two security vulnerabilities in Active Directory domain controllers that itaddressed in Novemberfollowing the availability of a proof-of-concept (PoC) tool on December 12. The two vulnerabilities tracked asCVE-2021-42278andCVE-2021-42287 have a severity rating of 7.5 out of a maximum of 10 and concern a privilege escalation flaw affecting the