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microsoft patch tuesday
© Vladyslav Yushynov |
Security & privacy

Update your PC! Patch Tuesday fixes 98 flaws

Keeping your devices updated is important. Developers release patches and fixes that improve your phone or computer’s performance and protect it against the latest threats.

Here’s a surprise for iPhone users — you can get the latest updates early if you take this simple step. Tap or click here to learn how to stay ahead of the pack.

Many Big Tech companies gather updates and release them on the second Tuesday of every month, known as Patch Tuesday. Microsoft just had its first one for 2023, and it’s a big one. Here’s what it addresses and how to get the update.


Microsoft describes a zero-day vulnerability as “a flaw in software for which no official patch or security update has been released.” This week the tech giant revealed fixes for one of these flaws, along with 98 others (11 of which are labeled as critical).

The zero-day flaw, CVE-2023-21674, can be exploited by an attacker to gain system privileges. The hacker can use these privileges to steal data, run commands or deploy malware.

The 11 critical fixes involve more elevation privileges, security bypasses and remote code execution, which hackers can use to take over your system. Here’s the list:

  • CVE-2023-21743
  • CVE-2023-21551
  • CVE-2023-21730
  • CVE-2023-21556
  • CVE-2023-21555
  • CVE-2023-21543
  • CVE-2023-21546
  • CVE-2023-21546
  • CVE-2023-21679
  • CVE-2023-21548
  • CVE-2023-21535

The remaining vulnerabilities involve information disclosure, denial of service and spoofing.

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Update your Windows PC now

Updating Windows gets you the latest fixes and security improvements, helping your PC run more efficiently while keeping up its defenses.

To update Windows 10:

  • Go to Start > Settings Update & Security > Windows Update. Then select Check for updates.
  • If an update is available, select Download and install now.

To update Windows 11:

  • Go to  Start Settings > Windows Update Check for updates.
  • If an update is available, select Download and install now.

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