Vulnerability Monitor

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CVE-2000-0673

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.

Security Impact Summary

CVE-2000-0673 is a security vulnerability that . Impacting 2 products from microsoft, from microsoft organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2000, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2000-07-27T04:00:00.000

Last Modified

2026-04-16T00:27:16.627

Status

Modified

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	microsoft	windows_2000	*	Yes
Operating System	microsoft	windows_nt	4.0	Yes
Operating System	microsoft	windows_nt	terminal_server	Yes

References

http://www.nai.com/research/covert/advisories/044.asp ([email protected])
http://www.securityfocus.com/bid/1514 Exploit, Patch, Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/1515 ([email protected])
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-047 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/5035 ([email protected])
http://www.nai.com/research/covert/advisories/044.asp (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/1514 Exploit, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/1515 (af854a3a-2127-422b-91ae-364da2661108)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-047 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/5035 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For microsoft's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.