CVE-2002-2121: Surfcontrol Superscout Email Filter

Medium severity, CVSS 5.0. EPSS: 2.6% chance of exploitation in the next 30 days.

SurfControl SuperScout Email filter for SMTP 3.5.1 allows remote attackers to cause a denial of service (crash) via a long SMTP (1) HELO or (2) RCPT TO command, possibly due to a buffer overflow.

Affected products

• Surfcontrol Superscout Email Filter: version 3.5.1 only

Published 2002-12-31. Last modified 2026-06-16.