CVE-1999-0770: Check Point Firewall-1

Low severity, CVSS 2.1. EPSS: 1.1% chance of exploitation in the next 30 days.

Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems.

Affected products

• Check Point Firewall-1: version 3.0 only; version 4.0 only

Published 1999-07-29. Last modified 2026-06-16.