Unspecified vulnerability in CA eTrust Antivirus WebScan allows remote attackers to execute arbitrary code due to "improper bounds checking when processing certain user input."
http://www3.ca.com/securityadvisor/vulninfo/vuln.aspx?id=34509
http://www.vupen.com/english/advisories/2006/3166
http://www.securityfocus.com/archive/1/442244/100/0/threaded