Microsoft today rolled out updates to plug at least 56 security holes in its Windows operating systems and other software. One of the bugs is already being actively exploited, and six of them were publicized prior to today, potentially giving attackers a head start in figuring out how to exploit the flaws.
Nine of the 56 vulnerabilities earned Microsoft’s most urgent “critical” rating, meaning malware or miscreants could use them to seize remote control over unpatched systems with little or no help from users.
The flaw being exploited in the wild already — CVE-2021-1732 — affects Windows 10, Server 2016 and later editions. It received a slightly less dire “important” rating and mainly because it is a vulnerability that lets an attacker increase their authority and control on a device, which means the attacker needs to already have access to the target system.
Two of the other bugs that were disclosed prior to this week are critical and reside in Microsoft’s .NET Framework, a component required by many third-party applications (most Windows users will have some version of .NET installed).
Windows 10 users should note that while the operating system installs all monthly patch roll-ups in one go, that rollup does not typically include .NET updates, which are installed on their own. So when you’ve backed up your system and installed this month’s patches, you may want to check Windows Update again to see if there are any .NET updates pending.
How to manually check for Updates in Windows 10
Open Start Menu and click on Settings > Update & Security settings
Here, press on the Check for updates button.
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.
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.