An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data.
\nTo exploit the vulnerability, an attacker could craft a special document file and then convince the user to open it. An attacker must know the memory address location where the object was created.
\nThe update addresses the vulnerability by changing the way certain Excel functions handle objects in memory.
","dates":{"published":"2020-09-11T17:09:08.000Z","modified":"2024-08-04T06:31:59.956Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.04352,"percentile":0.91132,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.04352},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.04352,"percentile":0.91132}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.04352,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.04352,"percentile":0.91132}]},"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":[],"affected":[{"vendor":"microsoft","product":"365_apps","name":"365 apps","label":"365_apps","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/365_apps"},{"vendor":"microsoft","product":"excel","name":"Excel","label":"excel","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"2010:sp2","noFixRecorded":false,"fixedIn":null},{"text":"2013:sp1","noFixRecorded":false,"fixedIn":null},{"text":"2016","noFixRecorded":false,"fixedIn":null}],"versionsText":"2010:sp2 | 2013:sp1 | 2016","eol":null,"hubHref":"/vendor/microsoft/excel"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise","name":"Microsoft 365 Apps for Enterprise","label":"microsoft 365 apps for enterprise","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases","eol":null,"hubHref":"/vendor/microsoft/microsoft_365_apps_for_enterprise"},{"vendor":"microsoft","product":"microsoft excel 2010 service pack 2","name":"Microsoft Excel 2010 Service Pack 2","label":"microsoft excel 2010 service pack 2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 13.0.0.0, < publication","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 13.0.0.0, < publication","eol":null,"hubHref":"/vendor/microsoft/microsoft_excel_2010_service_pack_2"},{"vendor":"microsoft","product":"microsoft excel 2013 service pack 1","name":"Microsoft Excel 2013 Service Pack 1","label":"microsoft excel 2013 service pack 1","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 15.0.0.0, < publication","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 15.0.0.0, < publication","eol":null,"hubHref":"/vendor/microsoft/microsoft_excel_2013_service_pack_1"},{"vendor":"microsoft","product":"microsoft excel 2016","name":"Microsoft Excel 2016","label":"microsoft excel 2016","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.0.0, < publication","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.0.0, < publication","eol":null,"hubHref":"/vendor/microsoft/microsoft_excel_2016"},{"vendor":"microsoft","product":"microsoft office 2016 for mac","name":"Microsoft Office 2016 for Mac","label":"microsoft office 2016 for mac","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.0, < publication","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.0, < publication","eol":null,"hubHref":"/vendor/microsoft/microsoft_office_2016_for_mac"},{"vendor":"microsoft","product":"microsoft office 2019","name":"Microsoft Office 2019","label":"microsoft office 2019","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 19.0.0, < https://aka.ms/OfficeSecurityReleases","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 19.0.0, < https://aka.ms/OfficeSecurityReleases","eol":null,"hubHref":"/vendor/microsoft/microsoft_office_2019"},{"vendor":"microsoft","product":"microsoft office 2019 for mac","name":"Microsoft Office 2019 for Mac","label":"microsoft office 2019 for mac","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.0, < publication","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.0, < publication","eol":null,"hubHref":"/vendor/microsoft/microsoft_office_2019_for_mac"},{"vendor":"microsoft","product":"microsoft office online server","name":"Microsoft Office Online Server","label":"microsoft office online server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 16.0.1, < publication","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 16.0.1, < publication","eol":null,"hubHref":"/vendor/microsoft/microsoft_office_online_server"},{"vendor":"microsoft","product":"microsoft office web apps 2013 service pack 1","name":"Microsoft Office Web Apps 2013 Service Pack 1","label":"microsoft office web apps 2013 service pack 1","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 15.0.0.0, < publication","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 15.0.0.0, < publication","eol":null,"hubHref":"/vendor/microsoft/microsoft_office_web_apps_2013_service_pack_1"},{"vendor":"microsoft","product":"microsoft sharepoint enterprise server 2013 service pack 1","name":"Microsoft SharePoint Enterprise Server 2013 Service Pack 1","label":"microsoft sharepoint enterprise server 2013 service pack 1","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 15.0.0, < publication","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 15.0.0, < publication","eol":null,"hubHref":"/vendor/microsoft/microsoft_sharepoint_enterprise_server_2013_service_pack_1"},{"vendor":"microsoft","product":"office","name":"Office","label":"office","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"2016","noFixRecorded":false,"fixedIn":null},{"text":"2019","noFixRecorded":false,"fixedIn":null}],"versionsText":"2016 | 2019","eol":{"isEol":true,"eolDate":"2025-10-14T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"2016","label":"2016","eolFrom":"2025-10-14T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":null},"product":{"name":"office","label":"Microsoft Office","category":"app"}},"hubHref":"/vendor/microsoft/office"},{"vendor":"microsoft","product":"office online server","name":"Office Online Server","label":"office online server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/microsoft/office_online_server"},{"vendor":"microsoft","product":"office_web_apps","name":"office web apps","label":"office_web_apps","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"2013:sp1","noFixRecorded":false,"fixedIn":null}],"versionsText":"2013:sp1","eol":null,"hubHref":"/vendor/microsoft/office_web_apps"},{"vendor":"microsoft","product":"sharepoint_enterprise_server","name":"sharepoint enterprise server","label":"sharepoint_enterprise_server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"2013:sp1","noFixRecorded":false,"fixedIn":null}],"versionsText":"2013:sp1","eol":null,"hubHref":"/vendor/microsoft/sharepoint_enterprise_server"}],"affectedCount":16,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1224","label":"portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1224","hostname":"portal.msrc.microsoft.com","tags":["X Refsource MISC","Patch","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-09-11T17:09:08.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T06:31:59.956Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":23,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T05:43:40.966Z","stale":false,"partial":false}}