CVE-2004-0162: Clearswift Mailsweeper

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

Multiple content security gateway and antivirus products allow remote attackers to bypass content restrictions via MIME encapsulation that uses RFC822 comment fields, which may be interpreted as other fields by mail clients.

Affected products

• Clearswift Mailsweeper: version 4.3.7 only; version 4.3.8 only; version 4.3.10 only; version 4.3.11 only; version 4.3.13 only; version 4.3.14 only; …
• F-Secure Internet Gatekeeper: version 6.3 only; version 6.4 only; version 6.31 only; version 6.32 only
• Paul L Daniels Ripmime: version 1.2.0 only; version 1.2.1 only; version 1.2.2 only; version 1.2.3 only; version 1.2.4 only; version 1.2.5 only; …

Published 2004-10-20. Last modified 2026-06-16.