Microsoft have released a security advisory on the 12th of May 2021 in line with their regular monthly patch schedule which includes a number of updates to address critical vulnerabilities.
These updates address vulnerabilities which may impact Denial of Service, Elevation of Privilege, Remote Code Execution, Security Restriction Bypass, Information Disclosure and Spoofing.
For more information please see: Microsoft Security Update Guide – Release Notes – May 2021 Security Update
This release consists of security updates for the following products, features and roles.
- .NET Core & Visual Studio
- HTTP.sys
- Internet Explorer
- Microsoft Accessibility Insights for Web
- Microsoft Bluetooth Driver
- Microsoft Dynamics Finance & Operations
- Microsoft Exchange Server
- Microsoft Graphics Component
- Microsoft Office
- Microsoft Office Access
- Microsoft Office Excel
- Microsoft Office SharePoint
- Microsoft Office Word
- Microsoft Windows Codecs Library
- Microsoft Windows IrDA
- Open Source Software
- Role: Hyper-V
- Skype for Business and Microsoft Lync
- Visual Studio
- Visual Studio Code
- Windows Container Isolation FS Filter Driver
- Windows Container Manager Service
- Windows Cryptographic Services
- Windows CSC Service
- Windows Desktop Bridge
- Windows OLE
- Windows Projected File System FS Filter
- Windows RDP Client
- Windows SMB
- Windows SSDP Service
- Windows Wallet Service
- Windows Wireless Networking
Matsco recommends any affected systems are updated as soon as convenient.