Microsoft warns of a critical vulnerability in System.NET Core remote code execution vulnerability in PowerShell 7.0.6 and 7.1.3 versions. No mitigation measures are available to block exploitation of the security flaw tracked as CVE-2021-26701. PowerShell provides a command-line shell, a framework, and a scripting language focused on automation for processing PowerShell commands. Microsoft has also announced that it would be making it easier to update Windows 10 and Windows Server by releasing future updates through the Microsoft Update service.
Source: https://www.bleepingcomputer.com/news/security/microsoft-warns-of-critical-powershell-7-code-execution-vulnerability/