Challenge Overview
Enter the CVE of the vulnerability as the flag with the correct flag format:
picoCTF{CVE-XXXX-XXXXX} replacing XXXX-XXXXX with the
numbers for the matching vulnerability.
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.
Solution
Based on the description I simply just put this into google:
"Windows Print Spooler Service RCE vulnerability in 2021"
Which the first thing that came up was CVE-2021-345.. from Veritas.
Flag: picoCTF{CVE-2021-345..}