CVE-2001-0056: Cisco Broadband Operating System

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

The Cisco Web Management interface in routers running CBOS 2.4.1 and earlier does not log invalid logins, which allows remote attackers to guess passwords without detection.

Affected products

• Cisco Broadband Operating System: up to and including 2.4.1

Published 2001-02-16. Last modified 2026-06-16.