The domain-locking implementation in the GARMINAXCONTROL.GarminAxControl_t.1 ActiveX control in npGarmin.dll in the Garmin Communicator Plug-In 2.6.4.0 does not properly enforce the restrictions that (1) download and (2) upload requests come from a web site specified by the user, which allows remote attackers to obtain sensitive information or reconfigure Garmin GPS devices via unspecified vectors related to a "synchronisation error."
https://exchange.xforce.ibmcloud.com/vulnerabilities/50360
http://www.securityfocus.com/bid/34858
http://www.securityfocus.com/archive/1/503319/100/0/threaded
http://securitytracker.com/id?1022173
http://secunia.com/secunia_research/2009-16/