Security News > 2021 > July > Update Your Windows PCs to Patch 117 New Flaws, Including 9 Zero-Days

Microsoft rolled out Patch Tuesday updates for the month of July with fixes for a total of 117 security vulnerabilities, including nine zero-day flaws, of which four are said to be under active attacks in the wild, potentially enabling an adversary to take control of affected systems.

"This Patch Tuesday comes just days after out-of-band updates were released to address PrintNightmare - the critical flaw in the Windows Print Spooler service that was found in all versions of Windows," Bharat Jogi, senior manager of vulnerability and threat research at Qualys, told The Hacker News.

"While MSFT has released updates to fix the vulnerability, users must still ensure that necessary configurations are set up correctly. Systems with misconfigurations will continue to be at risk of exploitation, even after the latest patch has been applied. PrintNightmare was a highly serious issue that further underscores the importance of marrying detection and remediation," Jogi added.

Other critical flaws remediated by Microsoft include remote code execution vulnerabilities affecting Windows DNS Server and Windows Kernel, the latter of which is rated 9.9 on the CVSS severity scale.

To install the latest security updates, Windows users can head to Start > Settings > Update & Security > Windows Update or by selecting Check for Windows updates.

Alongside Microsoft, patches have also been released by a number of other vendors to address several vulnerabilities, including -.

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