CVE-1999-0140

Windows NT - Denial of Service in RAS/PPTP

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0140. PoCs published by Simon Helson.

AI-analyzed exploit summary This exploit demonstrates a denial-of-service (DoS) vulnerability in Microsoft Windows NT 4.0 (up to SP4) by sending a large amount of garbage data followed by a control-D character to the PPTP/VPN service on port 1723, causing the target machine to reboot.

Description

Denial of service in RAS/PPTP on NT systems.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Simon Helson · textdoswindows
https://www.exploit-db.com/exploits/20508

This exploit demonstrates a denial-of-service (DoS) vulnerability in Microsoft Windows NT 4.0 (up to SP4) by sending a large amount of garbage data followed by a control-D character to the PPTP/VPN service on port 1723, causing the target machine to reboot.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Windows NT 4.0 (up to SP4)
No auth needed
Prerequisites: Network access to the target machine's PPTP/VPN service on port 1723
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0140

Scores

EPSS 0.1357
EPSS Percentile 96.0%

Details

Status published
Products (1)
microsoft/windows_nt
Published Jun 30, 1999
Tracked Since Feb 18, 2026