{"id":"CVE-2021-40442","state":"PUBLISHED","title":"Microsoft Excel Remote Code Execution Vulnerability","description":"Microsoft Excel Remote Code Execution Vulnerability","publishedAt":"2021-11-10T00:46:31.000Z","updatedAt":"2026-08-19T16:27:12.601Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","source":"microsoft"},"assigner":"microsoft","products":["Microsoft Microsoft 365 Apps for Enterprise","Microsoft Microsoft Excel 2013 Service Pack 1","Microsoft Microsoft Excel 2016","Microsoft Microsoft Office 2019","Microsoft Microsoft Office 2019 for Mac","Microsoft Microsoft Office LTSC 2021","Microsoft Microsoft Office LTSC for Mac 2021","Microsoft Microsoft Office Online Server","Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1","Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1"],"affected":[{"vendor":"Microsoft","product":"Microsoft 365 Apps for Enterprise","versions":[{"version":"16.0.1","status":"affected","lessThan":"https://aka.ms/OfficeSecurityReleases","versionType":"custom"}],"platforms":["32-bit Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Excel 2013 Service Pack 1","versions":[{"version":"15.0.0.0","status":"affected","lessThan":"15.0.5397.1001","versionType":"custom"}],"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Excel 2016","versions":[{"version":"16.0.0.0","status":"affected","lessThan":"16.0.5239.1001","versionType":"custom"}],"platforms":["32-bit Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Office 2019","versions":[{"version":"19.0.0","status":"affected","lessThan":"https://aka.ms/OfficeSecurityReleases","versionType":"custom"}],"platforms":["32-bit Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Office 2019 for Mac","versions":[{"version":"16.0.0","status":"affected","lessThan":"16.55.21111400","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Office LTSC 2021","versions":[{"version":"16.0.1","status":"affected","lessThan":"https://aka.ms/OfficeSecurityReleases","versionType":"custom"}],"platforms":["32-bit Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Office LTSC for Mac 2021","versions":[{"version":"16.0.1","status":"affected","lessThan":"16.55.21111400","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Office Online Server","versions":[{"version":"16.0.1","status":"affected","lessThan":"16.0.10380.20000","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Office Web Apps Server 2013 Service Pack 1","versions":[{"version":"15.0.1","status":"affected","lessThan":"15.0.5397.1001","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2013 Service Pack 1","versions":[{"version":"15.0.0","status":"affected","lessThan":"15.0.5397.1001","versionType":"custom"}],"platforms":["x64-based Systems"]}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40442","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40442"],"weaknesses":[],"ingestedAt":"2026-10-29T19:48:58.929Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/40xxx/CVE-2021-40442.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-40442","state":"PUBLISHED","datePublished":"2021-11-10T00:46:31.000Z","dateUpdated":"2026-08-19T16:27:12.601Z","assignerShortName":"microsoft","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateReserved":"2021-09-02T00:00:00.000Z"},"containers":{"cna":{"title":"Microsoft Excel Remote Code Execution Vulnerability","descriptions":[{"lang":"en-US","value":"Microsoft Excel Remote Code Execution Vulnerability"}],"affected":[{"vendor":"Microsoft","product":"Microsoft 365 Apps for Enterprise","versions":[{"version":"16.0.1","status":"affected","lessThan":"https://aka.ms/OfficeSecurityReleases","versionType":"custom"}],"platforms":["32-bit Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Excel 2013 Service Pack 1","versions":[{"version":"15.0.0.0","status":"affected","lessThan":"15.0.5397.1001","versionType":"custom"}],"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Excel 2016","versions":[{"version":"16.0.0.0","status":"affected","lessThan":"16.0.5239.1001","versionType":"custom"}],"platforms":["32-bit Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Office 2019","versions":[{"version":"19.0.0","status":"affected","lessThan":"https://aka.ms/OfficeSecurityReleases","versionType":"custom"}],"platforms":["32-bit Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Office 2019 for Mac","versions":[{"version":"16.0.0","status":"affected","lessThan":"16.55.21111400","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Office LTSC 2021","versions":[{"version":"16.0.1","status":"affected","lessThan":"https://aka.ms/OfficeSecurityReleases","versionType":"custom"}],"platforms":["32-bit Systems","x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Office LTSC for Mac 2021","versions":[{"version":"16.0.1","status":"affected","lessThan":"16.55.21111400","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Office Online Server","versions":[{"version":"16.0.1","status":"affected","lessThan":"16.0.10380.20000","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Office Web Apps Server 2013 Service Pack 1","versions":[{"version":"15.0.1","status":"affected","lessThan":"15.0.5397.1001","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2013 Service Pack 1","versions":[{"version":"15.0.0","status":"affected","lessThan":"15.0.5397.1001","versionType":"custom"}],"platforms":["x64-based Systems"]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40442","name":"Microsoft Excel Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"HIGH","baseScore":7.8,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}],"problemTypes":[{"descriptions":[{"description":"Remote Code Execution","lang":"en-US","type":"Impact"}]}],"providerMetadata":{"shortName":"microsoft","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateUpdated":"2026-08-19T16:27:12.601Z"},"datePublic":"2021-11-09T08:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:sharepoint_server_2013:*:sp1:*:*:enterprise:*:*:*","versionStartIncluding":"15.0.0","versionEndExcluding":"15.0.5397.1001"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:office_2019:*:*:*:*:*:*:*:*","versionStartIncluding":"19.0.0","versionEndExcluding":"https://aka.ms/OfficeSecurityReleases"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:office_2019:*:*:*:*:*:macos:*:*","versionStartIncluding":"16.0.0","versionEndExcluding":"16.55.21111400"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:office_online_server:*:*:*:*:*:*:*:*","versionStartIncluding":"16.0.1","versionEndExcluding":"16.0.10380.20000"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*","versionStartIncluding":"16.0.1","versionEndExcluding":"https://aka.ms/OfficeSecurityReleases"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:office_macos_2021:*:*:*:*:*:long_term_servicing_channel:*:*","versionStartIncluding":"16.0.1","versionEndExcluding":"16.55.21111400"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:*","versionStartIncluding":"16.0.1","versionEndExcluding":"https://aka.ms/OfficeSecurityReleases"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:excel_2016:*:*:*:*:*:*:x86:*","versionStartIncluding":"16.0.0.0","versionEndExcluding":"16.0.5239.1001"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:excel_2013:*:sp1:*:*:rt:*:*:*","versionStartIncluding":"15.0.0.0","versionEndExcluding":"15.0.5397.1001"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:office_web_apps_server_2013:*:sp1:*:*:*:*:*:*","versionStartIncluding":"15.0.1","versionEndExcluding":"15.0.5397.1001"}]}]}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40442","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T02:44:10.509Z"}}]}}}