March 2021 Monthly Patch Release

Published on 10 Mar 2021

Updated on 14 Apr 2021

Microsoft has released security patches to address multiple vulnerabilities in their software and products.

The vulnerabilities that have been classified as Critical in severity are listed in the table below.

For the full list of security patches released by Microsoft, please refer to https://portal.msrc.microsoft.com/en-us/security-guidance/releasenotedetail/2021-Mar

CRITICAL VULNERABILITIES
CVE Number CVE Name Base Score Reference
CVE-2021-26867 Windows Hyper-V Remote Code Execution Vulnerability 9.9 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26867
CVE-2021-26897 Windows DNS Server Remote Code Execution Vulnerability 9.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26897
CVE-2021-27080 Azure Sphere Unsigned Code Execution Vulnerability 9.3 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27080
CVE-2021-26855 Microsoft Exchange Server Remote Code Execution Vulnerability 9.1 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855
CVE-2021-26412 Microsoft Exchange Server Remote Code Execution Vulnerability 9.1 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26412
CVE-2021-26876 OpenType Font Parsing Remote Code Execution Vulnerability 8.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26876
CVE-2021-26411 Internet Explorer Memory Corruption Vulnerability 8.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26411
CVE-2021-21300 Git for Visual Studio Remote Code Execution Vulnerability 8.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-21300
CVE-2021-27065 Microsoft Exchange Server Remote Code Execution Vulnerability 7.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27065
CVE-2021-26857 Microsoft Exchange Server Remote Code Execution Vulnerability 7.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26857
CVE-2021-27061 HEVC Video Extensions Remote Code Execution Vulnerability 7.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27061
CVE-2021-26902 HEVC Video Extensions Remote Code Execution Vulnerability 7.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26902
CVE-2021-24089 HEVC Video Extensions Remote Code Execution Vulnerability 7.8 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24089
CVE-2021-27074 Azure Sphere Unsigned Code Execution Vulnerability 6.2 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27074