Network Management Protocol (SNMP) agent (snmp.exe) for Windows NT 4.0 before Service Pack 4 allows remote attackers to cause a denial of service (memory consumption) via a large number of SNMP packets with Object Identifiers (OIDs) that cannot be decoded. NIST National Vulnerability Database (NVD) -- services.nvd.nist.gov (CVE / CVSS / CPE). {"cve":{"id":"CVE-1999-1581","sourceIdentifier":"cve@mitre.org","published":"1997-12-23T05:00:00.000","lastModified":"2026-06-16T21:50:46.050","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Memory leak in Simple Network Management Protocol (SNMP) agent (snmp.exe) for Windows NT 4.0 before Service Pack 4 allows remote attackers to cause a denial of service (memory consumption) via a large number of SNMP packets with Object Identifiers (OIDs) that cannot be decoded."}],"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"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_nt:4.0:sp1:*:*:*:*:*:*","matchCriteriaId":"5BDCBCB8-DAA3-465F-ADDE-9143B8251989"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_nt:4.0:sp2:*:*:*:*:*:*","matchCriteriaId":"B86E0671-ED68-4549-B3AC-FD8BD79B0860"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_nt:4.0:sp3:*:*:*:*:*:*","matchCriteriaId":"BB76E7EC-C396-4537-9065-4E815DA7097C"}]}]}],"references":[{"url":"http://support.microsoft.com/kb/q178381/","source":"cve@mitre.org"},{"url":"http://www.kb.cert.org/vuls/id/4923","source":"cve@mitre.org","tags":["US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/8231","source":"cve@mitre.org"},{"url":"http://support.microsoft.com/kb/q178381/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/4923","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/8231","source":"af854a3a-2127-422b-91ae-364da2661108"}]}},