Yahoo : Security Vulnerabilities, CVEs, Published In 2006 (Denial of service)

Unspecified vulnerability in Yahoo! Messenger (Service 18) before 8.1.0.195 allows remote attackers to cause a denial of service (NULL dereference and application crash) via a crafted room name in a Conference Invite. NOTE: the provenance of this information is unknown; the details are obtained from third party information.

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.