CVE-2006-6406: Clam Anti-Virus Clamav

Medium severity, CVSS 5.0. EPSS: 3.3% chance of exploitation in the next 30 days.

Clam AntiVirus (ClamAV) 0.88.6 allows remote attackers to bypass virus detection by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file.

Affected products

Published 2006-12-10. Last modified 2026-06-16.