.0 allows remote attackers to cause a denial of service via a malformed SMB logon request in which the actual data size does not match the specified size. NIST National Vulnerability Database (NVD) -- services.nvd.nist.gov (CVE / CVSS / CPE). {"cve":{"id":"CVE-1999-0225","sourceIdentifier":"cve@mitre.org","published":"1998-02-14T05:00:00.000","lastModified":"2026-06-16T21:47:57.050","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Windows NT 4.0 allows remote attackers to cause a denial of service via a malformed SMB logon request in which the actual data size does not match the specified size."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:*","matchCriteriaId":"E53CDA8E-50A8-4509-B070-CCA5604FFB21"}]}]}],"references":[{"url":"http://www.microsoft.com/technet/support/kb.asp?ID=180963","source":"cve@mitre.org"},{"url":"http://www.nai.com/nai_labs/asp_set/advisory/25_windows_nt_dos_adv.asp","source":"cve@mitre.org","tags":["Patch","Vendor Advisory"]},{"url":"http://www.microsoft.com/technet/support/kb.asp?ID=180963","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.nai.com/nai_labs/asp_set/advisory/25_windows_nt_dos_adv.asp","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]}]}},