CVE-2005-1530: Sophos Anti-Virus

Medium severity, CVSS 5.0. EPSS: 6.2% chance of exploitation in the next 30 days.

Sophos Anti-Virus 5.0.1, with "Scan inside archive files" enabled, allows remote attackers to cause a denial of service (CPU consumption by infinite loop) via a Bzip2 archive with a large 'Extra field length' value.

Affected products

• Sophos Sophos Anti-Virus: version 3.4.6 only; version 3.78 only; version 3.78d only; version 3.79 only; version 3.80 only; version 3.81 only; …
• Sophos Sophos Mailmonitor: version 2.0 only; version 2.1 only
• Sophos Sophos Mailmonitor For Notes Domino: any version
• Sophos Sophos Puremessage Anti-Virus: version 4.6 only
• Sophos Sophos Small Business Suite: version 1.0 only

Published 2005-07-19. Last modified 2026-06-16.