Microsoft Exchange Server Elevation of Privilege VulnerabilityReferenceshttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34523https://www.zerodayinitiative.com/advisories/ZDI-21-822/http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html