This update resolves the "Unchecked Buffer in Remote Access Service Phonebook Could Lead to Code Execution" security vulnerability in Windows NT® 4.0. This vulnerability is the result of an unchecked buffer in the Remote Access Service (RAS) Phonebook. Download now to eliminate this vulnerability by instituting proper input checking on the RAS phonebook entries.

For more information about this issue, read the associated Microsoft Security Bulletin. (This site is in English.)

1. Click Start, point to Settings, and then click Control Panel.
2. Double-click Add/Remove Programs.
3. Select Windows NT Hotfix [See Q318138 for more information], and then click Add/Remove to uninstall.