The F-Prot engine fails to decompress ZIP files that have a version header greater then 15. The consequence is that the F-prot Engine is unable to scan the virus/malware inside and consequently flags it as harmless. If used as an Email Gateway solution the offending Emails will slip through.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/41222/TZO-012005-Fprot.txt
Source: https://packetstormsecurity.com/files/41222/TZO-012005-Fprot.txt.html