Microsoft Patch Tuesday, May 2021

Microsoft today released fixes to plug at least 55 security holes in its Windows operating systems and other software. Four of these weaknesses can be exploited by malware and malcontents to seize complete, remote control over vulnerable systems without any help from users. On deck this month are patches to quash a wormable flaw, a creepy wireless bug, and yet another reason to call for the death of Microsoft’s Internet Explorer (IE) web browser.

While May brings about half the normal volume of updates from Microsoft, there are some notable weaknesses that deserve prompt attention, particularly from enterprises. By all accounts, the most pressing priority this month is CVE-2021-31166 (https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31166), a Windows 10 and Windows Server flaw which allows an unauthenticated attacker to remotely execute malicious code at the operating system level. With this weakness, an attacker could compromise a host simply by sending it a specially-crafted packet of data.

Another curious bug fixed this month is CVE-2020-24587 (https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2020-24587), described as a “Windows Wireless Networking Information Disclosure Vulnerability.”

Microsoft also patched four more security holes its Exchange Server corporate email platform, which recently was besieged by attacks on four other zero-day Exchange flaws that resulted in hundreds of thousands of servers worldwide getting hacked.

How to manually check for Updates in Windows 10

Open Start Menu and click on SettingsUpdate & Security settings

Here, press on the Check for updates button.

Microsoft Patch Tuesday, May 2021

If any updates are available, they will be offered to you.

If Windows Update says that your PC is up to date, it means that you have all the updates that are currently available for your system.

If you are looking for details on the latest updates, click on the Details link. More details about the updates will then be shown to you.

Microsoft Patch Tuesday, May 2021

If you need more information about the updates, click on the Learn more link. Every update comes with a KB number. Here for example you can see update KB3103688 being offered. You could search on your favorite search engine using this KB number. Relevant results about the update are sure to be offered.

You can make your Windows 10 receive updates for other Microsoft products and software, like Office, when you update Windows.