CVE-2004-1776: Cisco IOS

High severity, CVSS 7.5. EPSS: 3.1% chance of exploitation in the next 30 days.

Cisco IOS 12.1(3) and 12.1(3)T allows remote attackers to read and modify device configuration data via the cable-docsis read-write community string used by the Data Over Cable Service Interface Specification (DOCSIS) standard.

Affected products

• Cisco IOS: version 12.1(3) only; version 12.1(3)t only

Published 2001-02-28. Last modified 2026-06-16.