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Cyber Security Agency of Singapore
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Monthly Patch

July 2021 Monthly Patch Release

14 July 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 Number

CVE Name

Base Score

Reference

CVE-2021-34458

Windows Kernel Remote Code Execution Vulnerability

9.9

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34458

CVE-2021-34473

Microsoft Exchange Server Remote Code Execution Vulnerability

9.1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34473

CVE-2021-34527

Windows Print Spooler Remote Code Execution Vulnerability

8.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34527

CVE-2021-34494

Windows DNS Server Remote Code Execution Vulnerability

8.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34494

CVE-2021-34450

Windows Hyper-V Remote Code Execution Vulnerability

8.5

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34450

CVE-2021-34474

Dynamics Business Central Remote Code Execution Vulnerability

8.0

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34474

CVE-2021-33740

Windows Media Remote Code Execution Vulnerability

7.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33740

CVE-2021-34503

Microsoft Windows Media Foundation Remote Code Execution Vulnerability

7.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34503

CVE-2021-34439

Microsoft Windows Media Foundation Remote Code Execution Vulnerability

7.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34439

CVE-2021-34522

Microsoft Defender Remote Code Execution Vulnerability

7.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34522

CVE-2021-34464

Microsoft Defender Remote Code Execution Vulnerability

7.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34464

CVE-2021-34497

Windows MSHTML Platform Remote Code Execution Vulnerability

6.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34497

CVE-2021-34448

Scripting Engine Memory Corruption Vulnerability

6.8

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34448

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