CVE-2013-3644: Justsystems Ichitaro

High severity, CVSS 10.0. EPSS: 4.2% chance of exploitation in the next 30 days.

Unspecified vulnerability in JustSystems Ichitaro 2006 through 2013; Ichitaro Pro through 2; Ichitaro Government 6, 7, and 2006 through 2010; Ichitaro Portable with oreplug; Ichitaro Viewer; and Ichitaro JUST School through 2010 allows remote attackers to execute arbitrary code via a crafted document.

Affected products

• Justsystems Ichitaro: version 6 only; version 7 only; version 2006 only; version 2007 only; version 2008 only; version 2009 only; …
• Justsystems Ichitaro Just School: affected versions not specified
• Justsystems Ichitaro Portable: affected versions not specified
• Justsystems Ichitaro Viewer: affected versions not specified

Published 2013-06-18. Last modified 2026-06-16.