CVE-2006-4573
Multiple unspecified vulnerabilities in the "utf8 combining characters handling" (utf8_handle_comb function in encoding.c) in screen before 4.0.3 allows user-assisted attackers to cause a denial of service (crash or hang) via certain UTF8 sequences.
Date published : 2006-10-24
http://lists.apple.com/archives/security-announce/2007/May/msg00004.html