Cisco UBR920 cable router - SNMP to change telnet passwords?

["Wolf, Glenn" <glenn.wolf () we-inc com>]

Hi,
   As per the following vulnerability:
http://online.securityfocus.com/bid/3758

  ... does anyone know how to exploit SNMP read-write access to change or
retrieve the usernames/passwords protecting the telnet access?  I have SNMP
read-write access on the Cisco UBR920 cable router, so I could DoS it, but
I'm looking for further access.

Thanks in advance,
Glenn

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