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
Published Oct 13, 2000
5.0
MEDIUMCVSS 2.0
EPSS 33.45%
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.
Affected products
No data.
- n/a
- 4.0
- terminal_server
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 33.45% (0.33446) | 98.33th | v5 (v2026.06.15) |
| Jul 20, 2026 | 32.90% (0.32903) | 98.18th | v5 (v2026.06.15) |
| Jun 20, 2026 | 38.21% (0.38209) | 98.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 32.90% (0.32903) | 98.13th | v5 (v2026.06.15) |
| Dec 28, 2025 | 20.25% (0.20252) | 95.32th | v4 (v2025.03.14) |
| Dec 27, 2025 | 17.33% (0.17327) | 94.86th | v4 (v2025.03.14) |
| Oct 28, 2025 | 20.25% (0.20252) | 95.26th | v4 (v2025.03.14) |
| Oct 27, 2025 | 17.33% (0.17327) | 94.77th | v4 (v2025.03.14) |
| Oct 23, 2025 | 20.25% (0.20252) | 95.25th | v4 (v2025.03.14) |
| Oct 1, 2025 | 32.48% (0.32485) | 96.72th | v4 (v2025.03.14) |
| Mar 17, 2025 | 17.33% (0.17327) | 94.54th | v4 (v2025.03.14) |
| Dec 17, 2024 | 1.47% (0.01469) | 86.45th | v3 (v2023.03.01) |
| Mar 20, 2023 | 5.91% (0.05914) | 92.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.26% (0.05256) | 91.81th | v3 (v2023.03.01) |
| Mar 6, 2023 | 24.73% (0.24729) | 96.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 24.73% (0.24729) | 95.30th | v2 (v2022.01.01) |
No CWE recorded.
References (5)
- http://www.nai.com/research/covert/advisories/044.asp vendor-advisoryx_refsource_NAI
- http://www.securityfocus.com/bid/1514 vdb-entryx_refsource_BIDExploitPatchVendor Advisory
- http://www.securityfocus.com/bid/1515 vdb-entryx_refsource_BID
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-047 vendor-advisoryx_refsource_MS
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5035 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://www.nai.com/research/covert/advisories/044.asp | vendor-advisoryx_refsource_NAI | |
| http://www.securityfocus.com/bid/1514 | vdb-entryx_refsource_BIDExploitPatchVendor Advisory | |
| http://www.securityfocus.com/bid/1515 | vdb-entryx_refsource_BID | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-047 | vendor-advisoryx_refsource_MS | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/5035 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.