CVE-2001-0863: Cisco 12000 Router

Medium severity, CVSS 5.0. EPSS: 1.7% chance of exploitation in the next 30 days.

Cisco 12000 with IOS 12.0 and line cards based on Engine 2 does not handle the "fragment" keyword in a compiled ACL (Turbo ACL) for packets that are sent to the router, which allows remote attackers to cause a denial of service via a flood of fragments.

Affected products

• Cisco 12000 Router: any version

Published 2001-12-06. Last modified 2026-06-16.