{"schemaVersion":3,"id":"CVE-2018-8343","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An elevation of privilege vulnerability exists in the Network Driver Interface Specification (NDIS) when ndis.sys fails to check the length of a buffer prior to copying memory to it, aka \"Windows NDIS Elevation of Privilege Vulnerability.\" This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8342.","dates":{"published":"2018-08-15T17:00:00.000Z","modified":"2024-08-05T06:54:35.412Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.8,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":7.8,"severity":"high","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":7.2,"severity":"high","vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01193,"percentile":0.67563,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.01193},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0167,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01193,"percentile":0.67563}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0167,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01193,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01193,"percentile":0.67563}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","description":"The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/120.html"}],"affected":[{"vendor":"microsoft","product":"windows_10","name":"windows 10","label":"windows_10","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"Version 1607 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"Version 1607 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"Version 1703 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"Version 1703 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"Version 1709 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"Version 1709 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"Version 1803 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"Version 1803 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"1607","noFixRecorded":false,"fixedIn":null},{"text":"1703","noFixRecorded":false,"fixedIn":null},{"text":"1709","noFixRecorded":false,"fixedIn":null},{"text":"1803","noFixRecorded":false,"fixedIn":null}],"versionsText":"32-bit Systems | Version 1607 for 32-bit Systems | Version 1607 for x64-based Systems | Version 1703 for 32-bit Systems | Version 1703 for x64-based Systems | Version 1709 for 32-bit Systems | Version 1709 for x64-based Systems | Version 1803 for 32-bit Systems | Version 1803 for x64-based Systems | x64-based Systems | na | 1607 | 1703 | 1709 | 1803","eol":null,"hubHref":"/vendor/microsoft/windows_10"},{"vendor":"microsoft","product":"windows 10 servers","name":"Windows 10 Servers","label":"windows 10 servers","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"version 1709  (Server Core Installation)","noFixRecorded":false,"fixedIn":null},{"text":"version 1803  (Server Core Installation)","noFixRecorded":false,"fixedIn":null}],"versionsText":"version 1709  (Server Core Installation) | version 1803  (Server Core Installation)","eol":null,"hubHref":"/vendor/microsoft/windows_10_servers"},{"vendor":"microsoft","product":"windows_7","name":"windows 7","label":"windows_7","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"32-bit Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"x64-based Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"32-bit Systems Service Pack 1 | x64-based Systems Service Pack 1 | na","eol":null,"hubHref":"/vendor/microsoft/windows_7"},{"vendor":"microsoft","product":"windows_8.1","name":"windows 8.1","label":"windows_8.1","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"32-bit systems","noFixRecorded":false,"fixedIn":null},{"text":"x64-based systems","noFixRecorded":false,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"32-bit systems | x64-based systems | na","eol":null,"hubHref":"/vendor/microsoft/windows_81"},{"vendor":"microsoft","product":"windows_rt_8.1","name":"windows rt 8.1","label":"windows_rt_8.1","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"Windows RT 8.1","noFixRecorded":false,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"Windows RT 8.1 | na","eol":null,"hubHref":"/vendor/microsoft/windows_rt_81"},{"vendor":"microsoft","product":"windows_server_2008","name":"windows server 2008","label":"windows_server_2008","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"r2:sp1","noFixRecorded":false,"fixedIn":null}],"versionsText":"na | r2:sp1","eol":null,"hubHref":"/vendor/microsoft/windows_server_2008"},{"vendor":"microsoft","product":"windows server 2008 r2","name":"Windows Server 2008 R2","label":"windows server 2008 r2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"Itanium-Based Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"x64-based Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"x64-based Systems Service Pack 1 (Server Core installation)","noFixRecorded":false,"fixedIn":null}],"versionsText":"Itanium-Based Systems Service Pack 1 | x64-based Systems Service Pack 1 | x64-based Systems Service Pack 1 (Server Core installation)","eol":null,"hubHref":"/vendor/microsoft/windows_server_2008_r2"},{"vendor":"microsoft","product":"windows_server_2012","name":"windows server 2012","label":"windows_server_2012","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"(Server Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"(Server Core installation) | na | r2","eol":null,"hubHref":"/vendor/microsoft/windows_server_2012"},{"vendor":"microsoft","product":"windows server 2012 r2","name":"Windows Server 2012 R2","label":"windows server 2012 r2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"(Server Core installation)","noFixRecorded":false,"fixedIn":null}],"versionsText":"(Server Core installation)","eol":null,"hubHref":"/vendor/microsoft/windows_server_2012_r2"},{"vendor":"microsoft","product":"windows_server_2016","name":"windows server 2016","label":"windows_server_2016","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"(Server Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"1709","noFixRecorded":false,"fixedIn":null},{"text":"1803","noFixRecorded":false,"fixedIn":null}],"versionsText":"(Server Core installation) | na | 1709 | 1803","eol":null,"hubHref":"/vendor/microsoft/windows_server_2016"}],"affectedCount":10,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8343","label":"portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8343","hostname":"portal.msrc.microsoft.com","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/104982","label":"www.securityfocus.com/bid/104982","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Third Party Advisory"]},{"url":"http://www.securitytracker.com/id/1041466","label":"www.securitytracker.com/id/1041466","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2018-08-15T17:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T06:54:35.412Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":31,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T23:05:43.665Z","stale":false,"partial":false}}