CVE-2004-0699: Check Point Firewall-1

High severity, CVSS 7.5. EPSS: 5.9% chance of exploitation in the next 30 days.

Heap-based buffer overflow in ASN.1 decoding library in Check Point VPN-1 products, when Aggressive Mode IKE is implemented, allows remote attackers to execute arbitrary code by initiating an IKE negotiation and then sending an IKE packet with malformed ASN.1 data.

Affected products

• Check Point Firewall-1: version 4.1 only
• Check Point VPN-1: any version

Published 2004-09-28. Last modified 2026-06-16.