CVE Catalog
CVE-1999-1222
MediumExploitation Probability (EPSS)
Very high risk4.65%
91th percentile - higher than 91% of all known CVEs
Summary
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.
Risk Assessment
Organizations may experience service outages, leading to potential loss of user trust and financial losses.
Recommendation
It is recommended to upgrade the system to a newer version and to monitor and filter DNS responses to prevent exploitation of this vulnerability.
Original NVD description (English source)
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.