Stack-based buffer overflow in the URL Search Hook (ICQToolBar.dll) in ICQ 6.5 allows remote attackers to cause a denial of service (persistent crash) and possibly execute arbitrary code via an Internet shortcut .URL file containing a long URL parameter, which triggers a crash when browsing a folder that contains this file.
https://www.exploit-db.com/exploits/8832
https://exchange.xforce.ibmcloud.com/vulnerabilities/50858
http://www.securityfocus.com/bid/35150
http://www.securityfocus.com/archive/1/503935/100/0/threaded