CVE-2011-1647: The web management interface on the Cisco RVS4000 Gigabit Security Router with software 1.x before 1.3.3.4...

Security readout for executives and security teams

This Cisco router issue lets a remote attacker obtain the private key for the web management interface’s admin SSL certificate. That key protects trust in the router’s management page. If vulnerable devices remain in use, management traffic and administrator trust in the interface may be undermined. Exposure is most likely where these specific Cisco small-business routers still run vulnerable firmware and their web management interface is reachable by untrusted networks. Prioritize remediation if these routers are still deployed, especially at network edges or remote sites. The issue is old, but exposed management interfaces on legacy network equipment remain a practical business risk. Mitigation focus: Upgrade RVS4000 firmware to 1.3.3.4, 2.0.2.7, or later as applicable.; Upgrade WRVS4400N firmware to 2.0.2.1 or later.; Restrict web management access to trusted administrative networks only..

Prepared

Jun 28, 2026, 01:17 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.