Multiple buffer overflows in the abcmidi-yaps translator in abcmidi 20050101, and other versions, allow remote attackers to execute arbitrary code via crafted ABC music files that trigger the overflows during translation into PostScript.
http://www.vupen.com/english/advisories/2006/1531
http://www.securityfocus.com/bid/17704
http://www.debian.org/security/2006/dsa-1043