CVE-1999-1222
Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service ...
Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service (crash) by returning 0.0.0.0 as the IP address for a DNS host name lookup.
Exploit likelihood
What each source reports
NVD Score used
Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service (crash) by returning 0.0.0.0 as the IP address for a DNS host name lookup.
- Record
CVE-1999-1222- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service (crash) by returning 0.0.0.0 as the IP address for a DNS host name lookup.
- Record
CVE-1999-1222- Updated
- 2026-11-02
EUVDEUVD-1999-1203 No score
Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service (crash) by returning 0.0.0.0 as the IP address for a DNS host name lookup.
- Record
EUVD-1999-1203- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2wcg-78mh-f9m8 No score
Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service ...
Netbt.sys in Windows NT 4.0 allows remote malicious DNS servers to cause a denial of service (crash) by returning 0.0.0.0 as the IP address for a DNS host name lookup.
- Record
GHSA-2wcg-78mh-f9m8- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-1222 is a medium vulnerability (CVSS 5.0) in Microsoft Windows Nt, published December 31, 1999. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.02%, the 92nd percentile. No source names a fixed version.