Home/CVE/The NetBIOS Name Server (NBNS) protocol does not perform authentication, which allows remote attackers to cause a denial
CVE

CVE-2000-0673

The NetBIOS Name Server (NBNS) protocol does not perform authentication, which allows remote attackers to cause a denial

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.

MEDIUM · CVSS 5 EPSS 0.20252
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  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 4% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules1 YARA rules0
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Affected Products & Versions

2
microsoft windows 2000all versions
microsoft windows ntall versions
⚠

Public Exploits & PoCs

2
remoteMicrosoft Windows NT 4.0/2000 - NetBIOS Name Conflictverified
pocwww.securityfocus.com · 1514www.securityfocus.com
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumWow6432Node Windows NT CurrentVersion Autorun Keys Modification
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Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published to NVD27 Jul 2000 · 04:00 AM
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.nai.com/research/covert/advisories/044.asp
http://www.securityfocus.com/bid/1515
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-047
https://exchange.xforce.ibmcloud.com/vulnerabilities/5035
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