Kaspersky Antivirus (KAV) crashes when it tries access a path that has more the 256 characters. In addition to this vulnerability, a long path can be used to hide malware. Also, malware with specially crafted names are not detected by this anti-virus product. Tested on Kaspersky Antivirus 4.0.9.0.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/30811/security-nnov.kav.txt
Source: https://packetstormsecurity.com/files/30811/security-nnov.kav.txt.html