Microsoft releases security updates addressing a total of 83 flaws, including an actively exploited zero-day vulnerability. The most severe of the issues is a remote code execution (RCE) flaw in Microsoft Defender. The bug is also known to have been actively exploited in the wild, although details are scarce on how widespread the attacks are or how this is being exploited. The latest security patches cover Microsoft Windows, Edge browser, ChakraCore, Office and Microsoft Office Services, and Web Apps, Visual Studio, Microsoft Malware Protection Engine,.NET Core, ASP.NET, and Azure.
Source: https://thehackernews.com/2021/01/microsoft-issues-patches-for-defender.html