according to Kotik

http://www.frsirt.com/bulletins/1663

There is a remote buffer overflow in it , this can be huge because most eMule versions onlines are outdated.

this can be huge not only because most eMule versions onlines are outdated but also because the vulnerability is in the Zlib (<= 1.22) in the file inftrees.c. And Zlib is used with Linux/windows and in such application as Windows Messenger, DirectX, FrontPage, Internet Explorer, Office...

Yep true so but I don't think the vuln is in Zlib because where is the use to rls it under the eMule application, prolly an eMule bug on how it is handling Zlib, but not a Zlib bug.