CVE-2001-1158: Check Point Firewall-1

High severity, CVSS 7.5. EPSS: 3.2% chance of exploitation in the next 30 days.

Check Point VPN-1/FireWall-1 4.1 base.def contains a default macro, accept_fw1_rdp, which can allow remote attackers to bypass intended restrictions with forged RDP (internal protocol) headers to UDP port 259 of arbitrary hosts.

Affected products

• Check Point Firewall-1: version 4.1 only; version 4.1_build_41439 only

Published 2001-07-09. Last modified 2026-06-16.