Buffer overflow in Links 2.0 pre4 allows remote attackers to crash client browsers and possibly execute arbitrary code via gamma tables in large 16-bit PNG images.
http://www.securityfocus.com/bid/4921
http://www.iss.net/security_center/static/9287.php
http://atrey.karlin.mff.cuni.cz/~clock/twibright/links/download/ChangeLog