CVE-2004-0819: OpenBSD

Medium severity, CVSS 5.0. EPSS: 1.4% chance of exploitation in the next 30 days.

The bridge functionality in OpenBSD 3.4 and 3.5, when running a gateway configured as a bridging firewall with the link2 option for IPSec enabled, allows remote attackers to cause a denial of service (crash) via an ICMP echo (ping) packet.

Affected products

• OpenBSD OpenBSD: version 3.2 only; version 3.3 only; version 3.4 only; version 3.5 only

Published 2004-08-25. Last modified 2026-06-16.