CVE-2007-4770
libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka ), which might allow context-dependent attackers to read from, or write to, out-of-bounds memory locations, related to corruption of REStackFrames.
Date published : 2008-01-28
http://www.securityfocus.com/bid/27455
http://www.securityfocus.com/archive/1/487677/100/0/threaded