Due to the nature of actively exploited zero-day exploits, it’s highly recommended that users download and install these Patch Tuesday updates immediately. Before we share the download links, let’s discuss some details about the fixed vulnerabilities.

Fixed vulnerabilities

The following table lists down fixed vulnerabilities in each category:

Zero-day vulnerabilities

Zero-day vulnerability means that the vulnerability has been discovered and became public, with no official fix at the moment. There are three zero-day vulnerabilities fixed in this May 2022 Patch Tuesday: Since these vulnerabilities have already been exposed, hackers will scan the web for vulnerable systems and may target unpatched systems at large scale. It is recommended all systems be patched with the latest Windows updates as soon as possible. Successful exploitation of this vulnerability could allow a Hyper-V guest to affect the functionality of the Hyper-V host. This is publicly exposed vulnerability, but is less likely to be exploited immediately. PetitPotam is an NTLM Relay attack used against Windows Domain Controllers or other Windows servers. This vulnerability will allow the attackers authenticate to the domain controller. On NTLM-enabled networks, domain administrators must ensure that services that permit NTLM authentication use protections such as Extended Protection for Authentication (EPA) or signing features such as SMB signing in order to prevent NTLM Relay Attacks.

List of fixed vulnerabilities

You can check out the complete list of vulnerabilities here.

Download KB5013943 for Windows 11 Version 22H1 (OS Build 22000.675)

For the latest version of Windows 11, you can download KB5013943 and keep your system safe from all the vulnerabilities discussed above. Apart from the bugfixes, there are a few improvements, highlights and known issues in KB5013943 for Windows 11. For more information, please visit Microsoft KB help page.

Addresses security issues for your Windows operating system.

Addresses a known issue that might cause issues for some .NET Framework 3.5 apps or prevent those apps from opening. The affected apps use certain optional components in .NET Framework 3.5, such as Windows Communication Foundation (WCF) and Windows Workflow (WWF) components.Addresses a known issue that might cause your screen to flicker if you start your device in Safe Mode. Components that rely on explorer.exe, such as File Explorer, the Start menu, and the taskbar, might be affected and appear unstable.

After installing the Windows updates released January 11, 2022 or later Windows versions on an affected version of Windows, recovery discs (CD or DVD) created by using the Backup and Restore (Windows 7) app in Control Panel might not start.

Download Links 2022-05 Cumulative Update for Windows 11 for x64-based Systems (KB5013943) [263.1 MB] 2022-05 Cumulative Update for Windows 11 for ARM64-based Systems (KB5013943) [335.6 MB] All KB5013943 Updates from Microsoft Catalog

Download KB5013942 for Windows 10 20H2, 21H1 and 21H2 (OS Builds 19042.1706, 19043.1706, and 19044.1706)

With this update, Windows 10 20H2 and 1909 have reached the end of service. Users running these versions should upgrade to the latest Windows 10 21H2. Otherwise, users running Home and Pro editions of these Operating Systems will no longer get updates from Windows Update. Apart from the bugfixes, the following changes have been made in KB5013942 for Windows 10. Improvements and highlights

This update contains various security improvements to internal OS functionality. No additional issues were documented for this release.

Windows 10 includes the same known issues as Windows 11. Download Links 2022-05 Cumulative Update for Windows 10 Version 20H2 for x64-based Systems (KB5013942) [666.5 MB] 2022-05 Cumulative Update for Windows 10 Version 20H2 for x86-based Systems (KB5013942) [314.2 MB] 2022-05 Cumulative Update for Windows 10 Version 21H1 for x64-based Systems (KB5013942) [666.5 MB] 2022-05 Cumulative Update for Windows 10 Version 21H1 for x86-based Systems (KB5013942) [314.2 MB] 2022-05 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5013942) [650.4 MB] 2022-05 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5013942) [306.9 MB] All KB5013942 for Windows 10 download links At the end, we would highly recommend that you install these updates as soon as possible. If you have an Internet connected or Domain connected system, it can potentially be a target of hackers. Secondly, if you are running Windows 10 20H2 or Windows 10 Version 1909, you should upgrade to the latest version as these versions will not get further updates from Microsoft. Also see:

Microsoft Patch Tuesday for October 2022 Fixes 84 VulnerabilitiesDownload June 2022 Patch Tuesday Update For Windows 10 (KB5014699)Download June 2022 Patch Tuesday Update For Windows 11 (KB5014697)April 2022 Patch Tuesday: Download KB5012599 Cumulative Update for Windows 10Download Windows 10 Cumulative Update KB5007186 and KB5007189: Fixes Zero-Day Vulnerabilities