Vulnerability in ZyXEL Prestige Routers Exposing Admin Interfaces

CVE-2001-1135

Summary

The ZyXEL Prestige 642R and 642R-I routers are susceptible to an access control vulnerability where the Telnet and FTP ports on the external WAN interface can be accessed from within the internal network. This flaw allows users with internal access and knowledge of the router's password to reconfigure the device, potentially enabling unauthorized changes to the router's settings. It is crucial for users to secure their routers by changing default passwords and implementing strict access controls to prevent unauthorized access.

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