CVE-2003-0100: Cisco IOS

High severity, CVSS 7.5. EPSS: 9.6% chance of exploitation in the next 30 days.

Buffer overflow in Cisco IOS 11.2.x to 12.0.x allows remote attackers to cause a denial of service and possibly execute commands via a large number of OSPF neighbor announcements.

Affected products

• Cisco IOS: version 11.1 only; version 11.1(7)aa only; version 11.1(7)ca only; version 11.1(9)ia only; version 11.1(13) only; version 11.1(13)aa only; …

Published 2003-03-03. Last modified 2026-06-16.