CVE-2004-0589: Cisco IOS

Medium severity, CVSS 4.3. EPSS: 3% chance of exploitation in the next 30 days.

Cisco IOS 11.1(x) through 11.3(x) and 12.0(x) through 12.2(x), when configured for BGP routing, allows remote attackers to cause a denial of service (device reload) via malformed BGP (1) OPEN or (2) UPDATE messages.

Affected products

• Cisco IOS: from 11.1, up to and including 12.2\(14\)sx2

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