{"schemaVersion":3,"id":"CVE-2020-1421","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A remote code execution vulnerability exists in Microsoft Windows that could allow remote code execution if a .LNK file is processed.An attacker who successfully exploited this vulnerability could gain the same user rights as the local user, aka 'LNK Remote Code Execution Vulnerability'.","dates":{"published":"2020-07-14T22:54:36.000Z","modified":"2024-08-04T06:39:09.659Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.3,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":9.3,"severity":"high","vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.74504,"percentile":0.99493,"severity":"critical","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.74504},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.74504,"percentile":0.99493}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.74504,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.74504,"percentile":0.99493}]},"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-843","name":"Access of Resource Using Incompatible Type ('Type Confusion')","description":"The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/843.html"}],"affected":[{"vendor":"microsoft","product":"windows","name":"Windows","label":"windows","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"10 Version 1803 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1803 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1803 for ARM64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1809 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1809 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1809 for ARM64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1709 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1709 for ARM64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1607 for 32-bit Systems","noFixRecorded":false,"fixedIn":null},{"text":"10 Version 1607 for x64-based Systems","noFixRecorded":false,"fixedIn":null},{"text":"7 for 32-bit Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"7 for x64-based Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"8.1 for 32-bit systems","noFixRecorded":false,"fixedIn":null},{"text":"8.1 for x64-based systems","noFixRecorded":false,"fixedIn":null},{"text":"RT 8.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"10 Version 1803 for 32-bit Systems | 10 Version 1803 for x64-based Systems | 10 Version 1803 for ARM64-based Systems | 10 Version 1809 for 32-bit Systems | 10 Version 1809 for x64-based Systems | 10 Version 1809 for ARM64-based Systems | 10 Version 1709 for x64-based Systems | 10 Version 1709 for ARM64-based Systems | 10 for 32-bit Systems | 10 for x64-based Systems | 10 Version 1607 for 32-bit Systems | 10 Version 1607 for x64-based Systems | 7 for 32-bit Systems Service Pack 1 | 7 for x64-based Systems Service Pack 1 | 8.1 for 32-bit systems | 8.1 for x64-based systems | RT 8.1","eol":{"isEol":true,"eolDate":"2016-01-12T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"8","label":"8","eolFrom":"2016-01-12T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":"6.2.9200"},"product":{"name":"windows","label":"Microsoft Windows","category":"os"}},"hubHref":"/vendor/microsoft/windows"},{"vendor":"microsoft","product":"windows_10","name":"windows 10","label":"windows_10","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"1607","noFixRecorded":false,"fixedIn":null},{"text":"1709","noFixRecorded":false,"fixedIn":null},{"text":"1803","noFixRecorded":false,"fixedIn":null},{"text":"1809","noFixRecorded":false,"fixedIn":null},{"text":"1903","noFixRecorded":false,"fixedIn":null},{"text":"1909","noFixRecorded":false,"fixedIn":null},{"text":"2004","noFixRecorded":false,"fixedIn":null}],"versionsText":"na | 1607 | 1709 | 1803 | 1809 | 1903 | 1909 | 2004","eol":null,"hubHref":"/vendor/microsoft/windows_10"},{"vendor":"microsoft","product":"windows 10 version 1903 for 32-bit systems","name":"Windows 10 Version 1903 for 32-bit Systems","label":"windows 10 version 1903 for 32-bit systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_1903_for_32-bit_systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for arm64-based systems","name":"Windows 10 Version 1903 for ARM64-based Systems","label":"windows 10 version 1903 for arm64-based systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_1903_for_arm64-based_systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for x64-based systems","name":"Windows 10 Version 1903 for x64-based Systems","label":"windows 10 version 1903 for x64-based systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_1903_for_x64-based_systems"},{"vendor":"microsoft","product":"windows 10 version 1909 for 32-bit systems","name":"Windows 10 Version 1909 for 32-bit Systems","label":"windows 10 version 1909 for 32-bit systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_1909_for_32-bit_systems"},{"vendor":"microsoft","product":"windows 10 version 1909 for arm64-based systems","name":"Windows 10 Version 1909 for ARM64-based Systems","label":"windows 10 version 1909 for arm64-based systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_1909_for_arm64-based_systems"},{"vendor":"microsoft","product":"windows 10 version 1909 for x64-based systems","name":"Windows 10 Version 1909 for x64-based Systems","label":"windows 10 version 1909 for x64-based systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_1909_for_x64-based_systems"},{"vendor":"microsoft","product":"windows 10 version 2004 for 32-bit systems","name":"Windows 10 Version 2004 for 32-bit Systems","label":"windows 10 version 2004 for 32-bit systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_2004_for_32-bit_systems"},{"vendor":"microsoft","product":"windows 10 version 2004 for arm64-based systems","name":"Windows 10 Version 2004 for ARM64-based Systems","label":"windows 10 version 2004 for arm64-based systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_2004_for_arm64-based_systems"},{"vendor":"microsoft","product":"windows 10 version 2004 for x64-based systems","name":"Windows 10 Version 2004 for x64-based Systems","label":"windows 10 version 2004 for x64-based systems","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_10_version_2004_for_x64-based_systems"},{"vendor":"microsoft","product":"windows_server","name":"windows server","label":"windows_server","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"2019","noFixRecorded":false,"fixedIn":null},{"text":"2019  (Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"2016","noFixRecorded":false,"fixedIn":null},{"text":"2016  (Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"2008 for 32-bit Systems Service Pack 2","noFixRecorded":false,"fixedIn":null},{"text":"2008 for 32-bit Systems Service Pack 2 (Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"2008 for x64-based Systems Service Pack 2","noFixRecorded":false,"fixedIn":null},{"text":"2008 for x64-based Systems Service Pack 2 (Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"2008 R2 for x64-based Systems Service Pack 1","noFixRecorded":false,"fixedIn":null},{"text":"2008 R2 for x64-based Systems Service Pack 1 (Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"2012","noFixRecorded":false,"fixedIn":null},{"text":"2012 (Core installation)","noFixRecorded":false,"fixedIn":null},{"text":"2012 R2","noFixRecorded":false,"fixedIn":null},{"text":"2012 R2 (Core installation)","noFixRecorded":false,"fixedIn":null}],"versionsText":"2019 | 2019  (Core installation) | 2016 | 2016  (Core installation) | 2008 for 32-bit Systems Service Pack 2 | 2008 for 32-bit Systems Service Pack 2 (Core installation) | 2008 for x64-based Systems Service Pack 2 | 2008 for x64-based Systems Service Pack 2 (Core installation) | 2008 R2 for x64-based Systems Service Pack 1 | 2008 R2 for x64-based Systems Service Pack 1 (Core installation) | 2012 | 2012 (Core installation) | 2012 R2 | 2012 R2 (Core installation)","eol":null,"hubHref":"/vendor/microsoft/windows_server"},{"vendor":"microsoft","product":"windows_server_2016","name":"windows server 2016","label":"windows_server_2016","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null},{"text":"1903","noFixRecorded":false,"fixedIn":null},{"text":"1909","noFixRecorded":false,"fixedIn":null},{"text":"2004","noFixRecorded":false,"fixedIn":null}],"versionsText":"na | 1903 | 1909 | 2004","eol":null,"hubHref":"/vendor/microsoft/windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019","name":"windows server 2019","label":"windows_server_2019","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/windows_server_2019"},{"vendor":"microsoft","product":"windows server, version 1903 (server core installation)","name":"Windows Server, version 1903 (Server Core installation)","label":"windows server, version 1903 (server core installation)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_server_version_1903_server_core_installation"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)","name":"Windows Server, version 1909 (Server Core installation)","label":"windows server, version 1909 (server core installation)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_server_version_1909_server_core_installation"},{"vendor":"microsoft","product":"windows server, version 2004 (server core installation)","name":"Windows Server, version 2004 (Server Core installation)","label":"windows server, version 2004 (server core installation)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"unspecified","noFixRecorded":false,"fixedIn":null}],"versionsText":"unspecified","eol":null,"hubHref":"/vendor/microsoft/windows_server_version_2004_server_core_installation"}],"affectedCount":17,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1421","label":"portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1421","hostname":"portal.msrc.microsoft.com","tags":["X Refsource MISC","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-923/","label":"www.zerodayinitiative.com/advisories/ZDI-20-923/","hostname":"www.zerodayinitiative.com","tags":["X Refsource MISC","Third Party Advisory","VDB Entry"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-07-14T22:54:36.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T06:39:09.659Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T15:57:29.929Z","stale":false,"partial":false}}