Microsoft released a security update to address Important vulnerabilities in PowerShell. This update protects against an an attacker exploiting these vulnerabilities to bypass Windows Defender Application Control (WDAC) enforcements and gain access to plain text credentials. 

For a complete description of the vulnerabilities and effected systems, visit Windows Defender Application Control Security Feature Bypass Vulnerability CVE-2020-0951 and .NET Core and Visual Studio Information Disclosure Vulnerability CVE-2021-41355.

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