CVE-2006-5647: Sophos Anti-Virus

Medium severity, CVSS 6.4. EPSS: 21.1% chance of exploitation in the next 30 days.

Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10, and other platforms before 4.11 allows remote attackers to cause a denial of service (memory corruption) and possibly execute arbitrary code via a malformed CHM file with a large name length in the CHM chunk header, aka "CHM name length memory consumption vulnerability."

Affected products

• Sophos Anti-Virus: version 4.04 only; version 4.05 only; version 4.5.3 only; version 4.5.4 only; version 4.5.11 only; version 4.5.12 only; …
• Sophos Endpoint Security: up to and including 6.04

Published 2006-11-01. Last modified 2026-06-16.