Microsoft has released emergency patches (KB5004945 for Windows 10) recently to fix the critical Windows vulnerability called PrintNightmare (CVE-2021-34527). The flaw in the security of the operating system of the Redmond house had emerged in recent days causing concern about the potential harmful effects.
We recommend that you install these updates immediately. Security updates released on or after July 6, 2021, contain protections for CVE-2021-1675 and the exploit for remote code execution in the Windows Print Spooler service known as PrintNightmare, documented in CVE-2021-34527.
Microsoft has released updates to protect against CVE-2021-34527. Please see: https://t.co/QZATXCPXnx
— Security Response (@msftsecresponse) July 6, 2021
The vulnerability affects all major versions of Windows. So Microsoft has released corrective patches for Windows Server 2019, Windows Server 2012 R2, Windows Server 2008, Windows 8.1, Windows RT 8.1, Windows 7 and Windows 10 (various versions).
- Windows 10 version 21H1/20H2/2004 carries the KB5004945 patch.
- Windows 10 version 1909 carries the KB5004946 patch.
- Windows 10 version 1809/2019 carries the KB5004947 patch.
- Windows 10 version 1803 carries the KB5004949 patch.
- Windows 10 version 1507 carries the KB5004950 patch.
Updates are currently being distributed through Windows Update, but you can alternatively download manually through the Windows Update Catalog. To identify the update intended for the specific version of Windows, you can start by consulting the System Updates section contained in the official page dedicated to the vulnerability.
You may also like to read: How to resolve Windows Insider blank screen issue