Predicatable Name Pipes Could Enable Privilege Elevation via Telnet" security vulnerability in the Windows 2000 Telnet service. Download now to prevent a malicious user from launching programs on your computer, gaining access to your network, or initiating a denial of service attack against your computer. This update addresses these issues: Two vulnerabilities that could enable an attacker to gain privileges on a Telnet server. Four vulnerabilities that could be used to disrupt Telnet services. One vulnerability that could make it easier for an attacker to gain access to a poorly configured network via the Telnet service.