Provide references for CVE-2021-43893.
Where can I find more information about CVE-2021-43893?
References are available at: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43893, http://packetstormsecurity.com/files/165560/Microsoft-Windows-EFSRPC-Arbitrary-File-Upload-Privilege-Escalation.html.