CVE-2006-6405: BitDefender Mail Protection for SMB 2.0 allows remote attackers to bypass virus detection by inserting inva...

Security readout for executives and security teams

This CVE describes an email-security bypass in BitDefender Mail Protection for SMB 2.0. A specially malformed MIME email could cause virus detection to miss encoded content, demonstrated with the EICAR test file. The business risk is missed malware at the mail gateway, but the sources do not provide CVSS, patch status, or evidence of active exploitation. Exposure is most likely limited to organizations still running BitDefender Mail Protection for SMB 2.0 or closely related legacy mail-filter deployments. Modern products may not be affected, but the supplied sources do not define fixed versions or broader affected product ranges. Prioritize discovery over emergency action. This is an old mail-filter bypass with unclear current exposure and no cited active exploitation, but any remaining legacy deployment could weaken malware defenses at a critical control point. Mitigation focus: Identify any remaining BitDefender Mail Protection for SMB 2.0 deployments.; Check BitDefender or successor vendor guidance for fixed versions or migration advice.; Add layered scanning beyond the affected mail gateway where feasible..

Prepared

Jun 29, 2026, 08:58 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.