CVE-2002-1203: IBM Secureway Firewall

Medium severity, CVSS 5.0. EPSS: 1.7% chance of exploitation in the next 30 days.

IBM SecureWay Firewall before 4.2.2 performs extra processing before determining that a packet is invalid and dropping it, which allows remote attackers to cause a denial of service (resource exhaustion) via a flood of malformed TCP packets without any flags set.

Affected products

• IBM Secureway Firewall: version 4.2 only; version 4.2.1 only

Published 2002-10-28. Last modified 2026-06-16.