CVE-2004-1799: OpenBSD

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

PF in certain OpenBSD versions, when stateful filtering is enabled, does not limit packets for a session to the original interface, which allows remote attackers to bypass intended packet filters via spoofed packets to other interfaces.

Affected products

• OpenBSD OpenBSD: version 3.0 only; version 3.1 only; version 3.2 only; version 3.3 only; version 3.4 only

Published 2004-12-31. Last modified 2026-06-16.