ws_mail.cgi in WebStore 400/400CS 4.14 allows remote authenticated WebStore administrators to execute arbitrary code via shell metacharacters in the kill parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/6685
https://euvd.enisa.europa.eu/vulnerability/EUVD-2001-1324
http://www.securityfocus.com/bid/2861
http://archives.neohapsis.com/archives/bugtraq/2001-06/0142.html