{"id":"CVE-2026-78524","published":"2026-09-08T17:18:40Z","modified":"2026-10-30T21:56:57Z","title":"Microsoft Office Remote Code Execution Vulnerability","vendor":"Microsoft","product":"Microsoft 365 Apps for Enterprise","tier":"tail","description":{"text":"Out-of-bounds write in Microsoft Office 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":0.5718,"provenance":"source"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78524","tags":["vendor-advisory","patch"]}],"priority":{"score":17.6,"factors":[{"name":"EPSS percentile","points":11.44},{"name":"CVSS severity","points":6.16}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Microsoft 365 Apps for Enterprise","versions":[">= 16.0.1, < 16.0.20326.20138"]},{"vendor":"Microsoft","product":"Microsoft Office 2016","versions":[">= 16.0.0, < 16.0.5569.1000"]},{"vendor":"Microsoft","product":"Microsoft Office 2019","versions":[">= 19.0.0, < 16.0.10417.20207"]},{"vendor":"Microsoft","product":"Microsoft Office 365 for Mac","versions":[">= 1.0.0, < 16.112.26090911"]},{"vendor":"Microsoft","product":"Microsoft Office LTSC 2021","versions":[">= 16.0.1, < 16.0.14334.20906"]},{"vendor":"Microsoft","product":"Microsoft Office LTSC 2024","versions":[">= 16.0.0, < 16.0.17932.20976"]},{"vendor":"Microsoft","product":"Microsoft Office LTSC for Mac 2021","versions":[">= 16.0.1, < 16.112.26090911"]},{"vendor":"Microsoft","product":"Microsoft Office LTSC for Mac 2024","versions":[">= 16.0.0, < 16.112.26090911"]}],"euvd":{"id":"EUVD-2026-73831","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-office-cwe-787"}}