Unspecified vulnerability, possibly a buffer overflow, in Justsystem Ichitaro 2007 and earlier allows remote attackers to execute arbitrary code via a modified document, as actively exploited in August 2007 by malware such as Tarodrop.D (Tarodrop.Q), a different vulnerability than CVE-2006-4326, CVE-2006-5424, CVE-2006-6400, and CVE-2007-1938.

Buffer overflow in JustSystems Hanako 2004 through 2006, Hanako viewer 1.x, Ichitaro 2004, Ichitaro 2005, Ichitaro Lite2, Ichitaro viewer 4.x, and Sanshiro 2005 allows remote attackers to execute arbitrary code via the (1) Keyword and (2) Title fields, related to string length fields.