{"id":"CVE-2026-97009","aliases":["EUVD-2026-99808","GHSA-3h57-r5m5-xv5w"],"status":"published","title":"Microsoft Office Excel Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft Office Excel 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":"2026-11-11","score":0.00323,"percentile":0.25589,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-10-13T19:00:36Z","modified":"2026-11-10T20:40:49Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office ltsc 2021"},{"vendor":"microsoft","product":"microsoft office ltsc 2024"},{"vendor":"microsoft","product":"office_2021"},{"vendor":"microsoft","product":"office_2024"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97009","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97009"},{"url":"https://github.com/advisories/GHSA-3h57-r5m5-xv5w"}],"sources":{"cve":[{"id":"CVE-2026-97009","title":"Microsoft Office Excel Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-10-13T19:00:36.549Z","modified":"2026-11-10T20:40:49.797Z","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"],"updated_at":"2026-11-10T22:18:30.298108Z"}],"euvd":[{"id":"EUVD-2026-99808","description":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-10-13T19:00:36Z","modified":"2026-11-10T20:40:49Z","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":"2026-11-10T22:23:58.54025Z"}],"ghsa":[{"id":"GHSA-3h57-r5m5-xv5w","title":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute...","description":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-10-13T21:37:09Z","modified":"2026-10-13T21:37:17Z","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":"2026-11-02T15:13:20.228797Z"}],"nvd":[{"id":"CVE-2026-97009","description":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-10-13T19:22:09.93Z","modified":"2026-10-14T16:48:01.117Z","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"],"updated_at":"2026-11-02T14:12:58.630796Z"}]}}