{"id":"CVE-2025-62563","title":"Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.","summary":"Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/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","excel = 2016","office = 2019","office_long_term_servicing_channel = 2021","office_long_term_servicing_channel = 2024","office_online_server < 16.0.10417.20075"],"patched":["office_online_server 16.0.10417.20075"],"published":"2025-12-09","updated":"2026-10-14","sourceUpdated":"2026-10-14T21:10:00.183","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-62563","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62563","label":"secure@microsoft.com"}],"tags":["nvd"],"epss":0.00614,"epssPercentile":0.48171,"ingestedAt":"2026-10-14T21:57:04.760Z","slug":"CVE-2025-62563","body":"## Overview\n\nUse after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.\n\n## Affected\n\n- `365_apps`\n- `excel = 2016`\n- `office = 2019`\n- `office_long_term_servicing_channel = 2021`\n- `office_long_term_servicing_channel = 2024`\n- `office_online_server < 16.0.10417.20075`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `office_online_server 16.0.10417.20075`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}