CVE-2009-4737: Justsystems Ichitaro

High severity, CVSS 9.3. EPSS: 3.5% chance of exploitation in the next 30 days.

Stack-based buffer overflow in JustSystems Corporation Ichitaro 13, 2004 through 2009, Viewer 2009 19.0.1.0 and earlier, and other versions allows context-dependent attackers to execute arbitrary code via a crafted Rich Text File (RTF), related to "pvpara ffooter."

Affected products

• Justsystems Ichitaro: version 13 only; version 2004 only; version 2005 only; version 2006 only; version 2007 only; version 2008 only; …
• Justsystems Ichitaro Viewer: version 19.0.1.0 only; version 20.0.2.0 only

Published 2010-04-06. Last modified 2026-06-16.