Microsoft Windows NT 3.5.1 SP2/3.5.1 SP3/3.5.1 SP4/3.5.1 SP5/4.0/4.0 SP1/4.0 SP2/4.0 SP3/4.0 SP4/4.0 SP5 - TelnetD

Author: Tomas Halgas
type: remote
platform: windows
port: 23.0
date_added: 1999-01-02 
date_updated: 2012-06-13 
verified: 1 
codes: OSVDB-83169 
tags: 
aliases:  
screenshot_url:  
application_url: 

source: https://www.securityfocus.com/bid/140/info

A vulnerability exists within Microsoft's Telnetd daemon which allows a denial of service condition. The popular scanning tool, Nmap 2.01 or later can crash telnetd services when using the SYN scanning flag (-sS).

nmap -sS -p 23 <target>