Microsoft Exchange Server Remote Code Execution VulnerabilityReferenceshttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42321http://packetstormsecurity.com/files/166153/Microsoft-Exchange-Server-Remote-Code-Execution.htmlhttp://packetstormsecurity.com/files/168131/Microsoft-Exchange-Server-ChainedSerializationBinder-Remote-Code-Execution.html