Microsoft Patch Tuesday July 2021 - Summary

July 152021











CVE Index for July 2021 Patch Tuesday Updates

Impact Component Type of update
CVE-2021-34474 Dynamics Business Central Control Remote Code Execution Security update
CVE-2021-31959 Microsoft Exchange Server Memory Corruption Security update
CVE-2021-34448 Microsoft Scripting Engine Remote Code Execution Security update
CVE-2021-33740 Microsoft Windows Codecs Library Remote Code Execution Security update
CVE-2021-34439 Microsoft Windows Media Foundation Remote Code Execution Security update
CVE-2021-34503 Microsoft Windows Media Foundation Remote Code Execution Security update
CVE-2021-34494 Role: DNS Server Remote Code Execution Security update
CVE-2021-34450 Role: Hyper-V Remote Code Execution Security update
CVE-2021-34522 Windows Defender Remote Code Execution Security update
CVE-2021-34458 Windows Kernel Remote Code Execution Security update
CVE-2021-34497 Windows MSHTML Platform Remote Code Execution Security update
CVE-2021-34527 Windows Defender Remote Code Execution Security update
CVE-2021-34464 Windows Print Spooler Components Remote Code Execution Security update
Windows Certificate Spoofing CVE-2021-34492
Microsoft Exchange Server Elevation of Privilege CVE-2021-34523
Microsoft Exchange Server Remote Code Execution CVE-2021-34473
Windows ADFS Security Feature Bypass CVE-2021-33779
Active Directory Security Feature Bypass CVE-2021-33781
Windows Print Spooler - The PrintNightmare Remote Code Execution CVE-2021-34527
Windows Kernel Elevation of Privilege CVE-2021-33771
Scripting Engine Memory Corruption CVE-2021-34448
Windows Kernel Elevation of Privilege CVE-2021-31979
CVE-2021-34504 CVE-2021-34476 CVE-2021-34460 CVE-2021-34509 CVE-2021-34455 CVE-2021-34459 CVE-2021-34498
CVE-2021-34448 CVE-2021-34497 CVE-2021-34496 CVE-2021-34446 CVE-2020-34494 CVE-2021-34444 CVE-2021-34511
CVE-2021-34500 CVE-2021-34516 CVE-2021-34492 CVE-2021-34512 CVE-2021-34461 CVE-2021-34456 CVE-2021-34447
CVE-2021-34514 CVE-2021-34457 CVE-2020-34513 CVE-2021-34507 CVE-2021-34454 CVE-2021-34441 CVE-2021-34440
CVE-2021-33788 CVE-2021-33783 CVE-2021-33782 CVE-2021-34499 CVE-2021-33765 CVE-2021-33757 CVE-2021-33756
CVE-2020-33750 CVE-2021-33749 CVE-2021-34462 CVE-2021-31979 CVE-2021-33752 CVE-2021-34466 CVE-2021-31183
CVE-2021-34527 CVE-2021-34450 CVE-2021-34508 CVE-2021-34449 CVE-2021-34510 CVE-2020-34445 CVE-2021-34442
CVE-2021-33786 CVE-2021-33780 CVE-2021-33764 CVE-2021-33754 CVE-2021-33746 CVE-2021-33745 CVE-2021-34493
CVE-2021-34521 CVE-2021-34491 CVE-2021-34458 CVE-2020-34503 CVE-2021-34490 CVE-2021-34489 CVE-2021-34439
CVE-2021-34488 CVE-2021-34438 CVE-2021-33785 CVE-2021-33784 CVE-2021-33781 CVE-2021-33779 CVE-2021-33778
CVE-2021-33777 CVE-2021-33776 CVE-2021-33775 CVE-2021-33774 CVE-2021-33773 CVE-2021-33772 CVE-2021-33771
CVE-2021-33763 CVE-2021-33761 CVE-2021-33760 CVE-2020-33759 CVE-2021-33758 CVE-2021-33755 CVE-2021-33751
CVE-2021-33740 CVE-2021-31947 CVE-2021-31961 CVE-2021-34525 CVE-2021-33743 CVE-2021-33744 CVE-2021-34475
CVE-2021-34506 CVE-2021-30557 CVE-2021-30556 CVE-2021-30555 CVE-2021-30554 CVE-2021-30553 CVE-2021-30552
CVE-2021-30551 CVE-2021-30550 CVE-2021-30549 CVE-2021-30548 CVE-2021-30547 CVE-2021-30546 CVE-2021-30545

Previous Patch Tuesday Updates and Fixes

7 essential vulnerability management questions answered

Microsoft Windows Patch Tuesday - Overview

What is Patch Tuesday?

Patch Tuesday, the colloquial term for Microsoft's Update Tuesday that falls on second Tuesday of every month. That is when Microsoft rolls out patch updates to improve security of Microsoft applications. Coinciding with the Patch Tuesday it is also a general trend for the roll out of patch updates for other third party applications that include Adobe and Mozilla, among many others.

When is Patch Tuesday?

The upcoming Patch Tuesday falls on August 10, 2021.

What is patching and why is it important?

Patches are nothing but pieces of software code that are written to fix a bug in a software application, that might lead to a vulnerability. Such vulnerabilities in any application are loop holes for attackers to get their hands on business critical data and information. So it is highly crucial to keep all the applications in a network updated to its latest versions. Updating applications in mobile phones and laptops also work in the same manner by preventing theft of personal data, through security flaws.

What kind of patch updates are released during Patch Tuesday?

Predominantly security patch updates of varying severity like Critical, Important, Moderate & Low are labeled and released. It is always a best practice to prioritize your patching based on the severity level mentioned.

What are CVE IDs?

CVE ID - Common Vulnerabilities and Exposure ID is a format in which each vulnerability is disclosed and cataloged in the National Vulnerability Database (NVD). You can look up for a detailed explanation of each vulnerability in the NVD with the help of CVE ID. In Patch Manager Plus you can make use of these CVE IDs to fetch the appropriate patches to deploy. You can find the CVE IDs here.

How to register for ManageEngine's Free Patch Tuesday webinar?

The upcoming Free Patch Tuesday webinar by ManageEngine is scheduled on -. You can make your registrations here

Where can I find more details about individual bulletins?

Each CVE ID listed in the CVE Index section has been linked to its security advisory.