CVE-XXXX-XXXX

We have this challenge statement:

The CVE we’re looking for is the first recorded remote code execution (RCE) vulnerability in 2021 in the Windows Print Spooler Service, which is available across desktop and server versions of Windows operating systems. The service is used to manage printers and print servers.

We are told to search a CVE identifier for the first RCE vulnerability in Windows Print Spooler Service in 2021. This vulnerability is known as PrintNightmare, and it corresponds to several CVE. But the one that the challenge is expecting is CVE-2021-34527, so the flag is picoCTF{CVE-2021-34527}.