Yahoo! Messenger 7.5.0.814 and 7.0.438 allows remote attackers to cause a denial of service (crash) via messages that contain non-ASCII characters, which triggers the crash in jscript.dll.
https://exchange.xforce.ibmcloud.com/vulnerabilities/27319
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-3295
http://www.securityfocus.com/bid/18622