CVE-2003-0209: Smoothwall

High severity, CVSS 10.0. EPSS: 38.6% chance of exploitation in the next 30 days.

Integer overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier allows remote attackers to execute arbitrary code via large sequence numbers in packets, which enable a heap-based buffer overflow.

Affected products

• Smoothwall Smoothwall: version 2.0_beta_4 only
• Sourcefire Snort: version 1.8 only; version 1.8.1 only; version 1.8.2 only; version 1.8.3 only; version 1.8.4 only; version 1.8.5 only; …

Published 2003-05-05. Last modified 2026-06-16.