Whitepaper called PrintNightmare Vulnerability. This document
illustrates the exploitation of the vulnerability found in the
Windows spooler service. Originally thought to be a local privilege
escalation vulnerability in the Windows Print Spooler, identified
as CVE-2021-1675 and patched during Microsoft's June Patch.
Microsoft increased the severity of this issue on June 21 as well
as reclassifying it as a 'remote code execution' (RCE) threat. This
RCE vulnerability has been assigned a new identifier,
CVE-2021-34527.
Read more https://packetstormsecurity.com/files/165024/PrintNightmare.pdf