CVE-2004-1454: Cisco IOS

Medium severity, CVSS 5.0. EPSS: 3.4% chance of exploitation in the next 30 days.

Cisco IOS 12.0S, 12.2, and 12.3, with Open Shortest Path First (OSPF) enabled, allows remote attackers to cause a denial of service (device reload) via a malformed OSPF packet.

Affected products

• Cisco IOS: version 12.0(22)s only; version 12.0(22)s4 only; version 12.0(22)s5 only; version 12.0(22)sy only; version 12.0(23)sx only; version 12.0(23)sz only; …

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