Veeam Backup and Replication ExecuteUploadManagerPerformUpload Remote Code Execution Exploit

An authentication bypass in Veeam.Backup.ServiceLib.CForeignInvokerNegotiateAuthenticator.Authenticate and a file upload present in ExecuteUploadManagerPerformUpload allows an unauthenticated attacker to execute system commands with the privileges of the "IIS Worker Process" process (NT AUTHORITY\\NETWORK SERVICE)