N/auth Module
auth.changePassword()
Method Description: Changes the current user’s NetSuite password. See Creating a Strong Password for information on valid passwords.
Returns: void
Supported Script Types: Server-side scripts For additional information, see SuiteScript 2.0 Script Types.
Governance: 10 units
Module: N/auth Module
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=auth.changePassword(options)

// Code Example 1

//Add additional code

//...

auth.changePassword({

    currentPassword: 'mycurrentPWD',

    newPassword: 'mynewPWD_2*'

});

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4298157647.html