CVE-2001-1071: Cisco Catos

Medium severity, CVSS 5.0. EPSS: 2.3% chance of exploitation in the next 30 days.

Cisco IOS 12.2 and earlier running Cisco Discovery Protocol (CDP) allows remote attackers to cause a denial of service (memory consumption) via a flood of CDP neighbor announcements.

Affected products

• Cisco Catos: version 4.5(1) only
• Cisco IOS: version 11.1 only; version 11.2 only; version 11.3(11)b only; version 12.0(5.1)xp only; version 12.0(19) only; version 12.1 only

Published 2001-10-09. Last modified 2026-06-16.