CVE-2003-1477: Clearswift Mailsweeper For Smtp

High severity, CVSS 7.8. EPSS: 1.6% chance of exploitation in the next 30 days.

MAILsweeper for SMTP 4.3.6 and 4.3.7 allows remote attackers to cause a denial of service (CPU consumption) via a PowerPoint attachment that either (1) is corrupt or (2) contains "embedded objects."

Affected products

• Clearswift Mailsweeper For Smtp: version 4.3.6 only; version 4.3.7 only

Published 2003-12-31. Last modified 2026-06-16.