{"id":"CVE-2026-64906","title":"Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.","summary":"Heap-based buffer overflow in Microsoft Office Access 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-122"],"vendor":"microsoft","product":"365_apps","affected":["365_apps","access = 2016","office_2019","office_2021","office_2024"],"published":"2026-08-11","updated":"2026-10-14","sourceUpdated":"2026-10-14T22:10:00.210","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-64906","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64906","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-08-07T00:00:00+00:00"},"epss":0.00466,"epssPercentile":0.4022,"ingestedAt":"2026-09-08T18:07:34.889Z","slug":"CVE-2026-64906","body":"## Overview\n\nHeap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.\n\n## Affected\n\n- `365_apps`\n- `access = 2016`\n- `office_2019`\n- `office_2021`\n- `office_2024`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}