Microsoft has released December 2019 security updates.  A remote attacker could exploit some of these vulnerabilities to take control of an affected system.  Microsoft has released updates to address these vulnerabilities.

For details, please refer to:

https://www.us-cert.gov/ncas/current-activity/2019/12/10/microsoft-releases-december-2019-security-updates

https://portal.msrc.microsoft.com/en-us/security-guidance/releasenotedetail/2019-Dec

https://support.microsoft.com/en-us/help/20191210/security-update-deployment-information-december-10-2019