Local users in Windows NT can obtain administrator privileges by changing the KnownDLLs list to reference malicious programs.

BUGTRAQ:Feb20,1999 | L0PHT:Feb18,1999 | MS:MS99-006 | URL:https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-006 | XF:nt-knowndlls-list