The isChecked function in Toolbar.DLL in Advanced Searchbar before 3.33 allows remote attackers to cause a denial of service (NULL dereference and browser crash) via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35805
http://www.securityfocus.com/archive/1/475932/100/100/threaded
http://www.securityfocus.com/archive/1/475534/100/0/threaded
http://www.attrition.org/pipermail/vim/2007-August/001756.html