Use-after-free vulnerability in the LIVEAUDIO.LiveAudioCtrl.1 ActiveX control in LIVEAU~1.OCX 7.0 for GeoVision DVR systems allows remote attackers to execute arbitrary code by calling the GetAudioPlayingTime method with certain arguments.
https://www.exploit-db.com/exploits/8206
https://exchange.xforce.ibmcloud.com/vulnerabilities/49238
http://www.securityfocus.com/archive/1/501773/100/0/threaded