Symantec Norton AntiVirus 2004, and earlier versions, allows a virus or other malicious code to avoid detection or cause a denial of service (application crash) using a filename containing an MS-DOS device name.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17603
http://www.seifried.org/security/advisories/kssa-010.html
http://www.idefense.com/application/poi/display?id=147&type=vulnerabilities