CVE-2000-0673

Windows 2000 and NT - Denial of Service via Spoofed NetBIOS Name Server Datagram

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2000-0673. PoCs published by Sir Dystic.

AI-analyzed exploit summary This exploit demonstrates a NetBIOS Name Conflict attack (CVE-2000-0673) by sending crafted packets to disrupt NetBIOS name registration. The code includes functionality to decode NetBIOS packets and perform various network scans.

Description

The NetBIOS Name Server (NBNS) protocol does not perform authentication, which allows remote attackers to cause a denial of service by sending a spoofed Name Conflict or Name Release datagram, aka the "NetBIOS Name Server Protocol Spoofing" vulnerability.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Sir Dystic · c++remotewindows
https://www.exploit-db.com/exploits/20106

This exploit demonstrates a NetBIOS Name Conflict attack (CVE-2000-0673) by sending crafted packets to disrupt NetBIOS name registration. The code includes functionality to decode NetBIOS packets and perform various network scans.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: NetBIOS Name Service (UDP 137)
No auth needed
Prerequisites: Network access to target's NetBIOS service
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Various Sources vendor-advisory x_refsource_nai
http://www.nai.com/research/covert/advisories/044.asp
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/5035
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/1515
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/1514

Scores

EPSS 0.2025
EPSS Percentile 95.7%

Details

Status published
Products (3)
microsoft/windows_2000
microsoft/windows_nt 4.0
microsoft/windows_nt terminal_server
Published Jul 27, 2000
Tracked Since Feb 18, 2026