CVE-2004-0947: Arj Software Inc. Unarj

High severity, CVSS 10.0. EPSS: 7.4% chance of exploitation in the next 30 days.

Buffer overflow in unarj before 2.63a-r2 allows remote attackers to execute arbitrary code via an arj archive that contains long filenames.

Affected products

• Arj Software Inc. Unarj: version 2.62 only; version 2.63_a only; version 2.64 only; version 2.65 only
• Gentoo Linux: any version
• Suse Suse Linux: version 9.0 only; version 9.1 only; version 9.2 only

Published 2005-02-09. Last modified 2026-06-16.