CVE-2006-4326: Justsystem Formliner

High severity, CVSS 7.5. EPSS: 4.6% chance of exploitation in the next 30 days.

Stack-based buffer overflow in Justsystem Ichitaro 9.x through 13.x, Ichitaro 2004, 2005, 2006, and Government 2006; Ichitaro for Linux; and FormLiner before 20060818 allows remote attackers to execute arbitrary code via long Unicode strings in a crafted document, as being actively exploited by malware such as Trojan.Tarodrop. NOTE: some details are obtained from third party information.

Affected products

• Justsystem Formliner: any version
• Justsystem Ichitaro: version 9.0 only; version 10.0 only; version 11.0 only; version 12.0 only; version 13.0 only; version 2004 only; …
• Justsystem Ichitaro Government: version 2006 only

Published 2006-08-24. Last modified 2026-06-16.