Buffer overflow in AppKit for Mac OS X 10.3.9 and 10.4.2, as used in applications such as TextEdit, allows external user-assisted attackers to execute arbitrary code via a crafted Microsoft Word file.
http://www.us-cert.gov/cas/techalerts/TA05-229A.html
http://www.kb.cert.org/vuls/id/172948
http://securitytracker.com/id?1014695
http://lists.apple.com/archives/security-announce/2005/Aug/msg00000.html
http://lists.apple.com/archives/security-announce/2005//Aug/msg00001.html