Eudora 6.1 and 6.0.3 for Windows allows remote attackers to cause a denial of service (crash) via a deeply nested multipart MIME message.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15857
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-1936
http://www.securityfocus.com/bid/10137
http://secunia.com/advisories/11360
http://marc.info/?l=bugtraq&m=108241694627321&w=2
http://lists.grok.org.uk/pipermail/full-disclosure/2004-April/020075.html