The Message Engine RPC service in CA BrightStor ARCServe BackUp v9.01 through R11.5, and Enterprise Backup r10.5, allows attackers to execute arbitrary code by using certain "insecure method calls" to modify the file system and registry, aka "Privileged function exposure."
http://secunia.com/advisories/27192
http://supportconnectw.ca.com/public/storage/infodocs/basb-secnotice.asp
http://www.securityfocus.com/archive/1/482121/100/0/threaded
http://www.securityfocus.com/archive/1/484229/100/0/threaded
http://www.securityfocus.com/bid/26015
http://www.securitytracker.com/id?1018805
http://www.vupen.com/english/advisories/2007/3470