Unspecified vulnerability in JustSystems Ichitaro 13, 2004 through 2008, Lite2, and Ichitaro viewer 5.1.5.0 and earlier allows remote attackers to execute arbitrary code via a crafted file, as exploited in the wild by Trojan.Tarodrop.H in March 2009.

Ichitaro 2005 through 2007, and possibly related products, allows remote attackers to have an unknown impact via unspecified vectors in a document distributed through e-mail or a web site, possibly due to a buffer overflow or cross-site scripting (XSS).