CVE-2006-6407: F-Prot Antivirus

Medium severity, CVSS 5.0. EPSS: 2.2% chance of exploitation in the next 30 days.

F-Prot Antivirus for Linux x86 Mail Servers 4.6.6 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

• F-Prot F-Prot Antivirus: version 4.6.6 only

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