{"id":"CVE-2026-62870","published":"2026-08-03T22:58:03Z","modified":"2026-10-28T20:07:09Z","title":"Microsoft Excel Remote Code Execution Vulnerability","vendor":"Microsoft","product":"Microsoft 365 Apps for Enterprise","tier":"tail","description":{"text":"Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","provenance":"source","from":"CVE.org"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00819,"percentile":0.5707,"provenance":"source"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62870","tags":["vendor-advisory","patch"]}],"priority":{"score":17.6,"factors":[{"name":"EPSS percentile","points":11.41},{"name":"CVSS severity","points":6.16}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Microsoft 365 Apps for Enterprise","versions":[">= 16.0.1, < https://aka.ms/OfficeSecurityReleases"]},{"vendor":"Microsoft","product":"Microsoft Excel 2016","versions":[">= 16.0.0.0, < 16.0.5561.1001"]},{"vendor":"Microsoft","product":"Microsoft Office 2019","versions":[">= 19.0.0, < https://aka.ms/OfficeSecurityReleases"]},{"vendor":"Microsoft","product":"Microsoft Office LTSC 2021","versions":[">= 16.0.1, < https://aka.ms/OfficeSecurityReleases"]},{"vendor":"Microsoft","product":"Microsoft Office LTSC 2024","versions":[">= 16.0.0, < https://aka.ms/OfficeSecurityReleases"]}],"euvd":{"id":"EUVD-2026-52536","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-office-cwe-416"}}