The default permissions for the RAS Administration key in Windows NT 4.0 allows local users to execute arbitrary commands by changing the value to point to a malicious DLL, aka one of the "Registry Permissions" vulnerabilities.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A500
https://exchange.xforce.ibmcloud.com/vulnerabilities/5671
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-095