hagent.exe in Wyse Device Manager (WDM) 4.7.x does not require authentication for commands, which allows remote attackers to obtain management access via a crafted query, as demonstrated by a V52 query that triggers a power-off action.
http://www.wyse.com/serviceandsupport/Wyse%20Security%20Bulletin%20WSB09-01.pdf
http://www.theregister.co.uk/2009/07/10/wyse_remote_exploit_bugs/
http://www.kb.cert.org/vuls/id/654545
http://archives.neohapsis.com/archives/fulldisclosure/2009-07/0101.html