July 2021 Monthly Patch Release

Published on 14 Jul 2021

Updated on 14 Jul 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-Jul

CRITICAL VULNERABILITIES
CVE NumberCVE NameBase ScoreReference
CVE-2021-34458Windows Kernel Remote Code Execution Vulnerability9.9https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34458
CVE-2021-34473Microsoft Exchange Server Remote Code Execution Vulnerability9.1https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34473
CVE-2021-34527Windows Print Spooler Remote Code Execution Vulnerability8.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34527
CVE-2021-34494Windows DNS Server Remote Code Execution Vulnerability8.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34494
CVE-2021-34450Windows Hyper-V Remote Code Execution Vulnerability8.5https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34450
CVE-2021-34474Dynamics Business Central Remote Code Execution Vulnerability8.0https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34474
CVE-2021-33740Windows Media Remote Code Execution Vulnerability7.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33740
CVE-2021-34503Microsoft Windows Media Foundation Remote Code Execution Vulnerability7.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34503
CVE-2021-34439Microsoft Windows Media Foundation Remote Code Execution Vulnerability7.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34439
CVE-2021-34522Microsoft Defender Remote Code Execution Vulnerability7.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34522
CVE-2021-34464Microsoft Defender Remote Code Execution Vulnerability7.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34464
CVE-2021-34497Windows MSHTML Platform Remote Code Execution Vulnerability6.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34497
CVE-2021-34448Scripting Engine Memory Corruption Vulnerability6.8https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34448