CVE-2021-34527 | Microsoft Windows up to Server 2019 Print Spooler Service spoolsv.exe RpcAddPrinterDriverEx dwFileCopyFlags PrintNightmare access control (VU#383432)
A vulnerability identified as critical has been detected in Microsoft Windows. This impacts the function RpcAddPrinterDriverEx of the file spoolsv.exe of the component Print Spooler Service. Performing manipulation of the argument dwFileCopyFlags results in improper access controls.
This vulnerability is cataloged as CVE-2021-34527. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.
It is recommended to apply a patch to fix this issue.