{"id":"CVE-2026-100212","title":"Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","summary":"Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"microsoft","product":"365_apps","affected":["365_apps","microsoft_365","office_2021","office_2024","office_online_server < 16.0.10417.20228"],"patched":["office_online_server 16.0.10417.20228"],"published":"2026-10-13","updated":"2026-10-14","sourceUpdated":"2026-10-14T18:52:04.687","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100212","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100212","label":"secure@microsoft.com"}],"tags":["nvd"],"epss":0.00805,"epssPercentile":0.55809,"ingestedAt":"2026-10-13T19:43:28.877Z","slug":"CVE-2026-100212","body":"## Overview\n\nUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.\n\n## Affected\n\n- `365_apps`\n- `microsoft_365`\n- `office_2021`\n- `office_2024`\n- `office_online_server < 16.0.10417.20228`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `office_online_server 16.0.10417.20228`","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}