{"id":"CVE-2026-64898","aliases":["EUVD-2026-56701","GHSA-v8rw-p6qg-h7qx"],"status":"published","title":"Microsoft Office Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00466,"percentile":0.40694,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122","CWE-190"],"published":"2026-08-11T17:06:34Z","modified":"2026-11-10T22:00:23Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office 2019"},{"vendor":"microsoft","product":"microsoft office 365 for mac"},{"vendor":"microsoft","product":"microsoft office ltsc 2021"},{"vendor":"microsoft","product":"microsoft office ltsc 2024"},{"vendor":"microsoft","product":"microsoft office ltsc for mac 2021"},{"vendor":"microsoft","product":"microsoft office ltsc for mac 2024"},{"vendor":"microsoft","product":"microsoft_365"},{"vendor":"microsoft","product":"office_2019"},{"vendor":"microsoft","product":"office_2021"},{"vendor":"microsoft","product":"office_2024"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64898","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64898"},{"url":"https://github.com/advisories/GHSA-v8rw-p6qg-h7qx"}],"sources":{"cve":[{"id":"CVE-2026-64898","title":"Microsoft Office Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-08-11T17:06:34.765Z","modified":"2026-11-10T22:00:23.024Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-122","CWE-190"],"updated_at":"2026-11-10T23:49:30.334266Z"}],"euvd":[{"id":"EUVD-2026-56701","description":"Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-08-11T17:06:34Z","modified":"2026-11-10T22:00:23Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T23:24:16.815365Z"}],"ghsa":[{"id":"GHSA-v8rw-p6qg-h7qx","title":"Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code...","description":"Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-08-11T18:31:33Z","modified":"2026-08-11T18:31:34Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-64898","description":"Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-08-11T17:18:50.567Z","modified":"2026-08-13T18:57:11.08Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122","CWE-190"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}