The convertdoc tool allows to execute XXE process commands from the command-line, exactly as if these process commands were executed from XXE.
Just like XXE, the convertdoc command-line tool scans directories for configurations and XML catalogs, loads image toolkit plug-ins, loads XSL-FO processor plug-ins, supports XInclude, etc.
The convertdoc command-line tool will not run on a headless server.
On the other hand, you can use convertdoc to convert documents stored on a remote server (HTTP
, WebDAV
, FTP
, ssh
, etc). More information in About convertdoc and user authentication.