Yes. Follow the instructions for RME 3.3 and later at http://www.cisco.com/en/US/products/sw/cscowork/ps2073/products_password_recovery09186a0080107dee.shtml .
This assumes you're using local authentication and authorization. If not, you will need to run the following command:
NMSROOT/bin/perl NMSROOT/bin/ResetLoginModule.pl
then, if you still cannot login, follow the password recovery procedure above.