{"id":"CVE-2026-97770","aliases":["EUVD-2026-99824","GHSA-9wh8-vfw9-xj46"],"status":"published","title":"Microsoft Office Excel Remote Code Execution Vulnerability","description":"Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/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":0.00743,"percentile":0.55032,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-10-13T19:00:37Z","modified":"2026-11-10T20:40:58Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"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 online server"},{"vendor":"microsoft","product":"office_2021"},{"vendor":"microsoft","product":"office_2024"},{"vendor":"microsoft","product":"office_online_server"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97770","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97770"},{"url":"https://github.com/advisories/GHSA-9wh8-vfw9-xj46"}],"sources":{"cve":[{"id":"CVE-2026-97770","title":"Microsoft Office Excel Remote Code Execution Vulnerability","description":"Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:00:37.824Z","modified":"2026-11-10T20:40:58.358Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/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-121"],"updated_at":"2026-11-10T22:18:30.298108Z"}],"euvd":[{"id":"EUVD-2026-99824","description":"Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:00:37Z","modified":"2026-11-10T20:40:58Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T22:23:58.135191Z"}],"ghsa":[{"id":"GHSA-9wh8-vfw9-xj46","title":"Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute...","description":"Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T21:37:13Z","modified":"2026-10-13T21:37:18Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:13:20.228797Z"}],"nvd":[{"id":"CVE-2026-97770","description":"Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:22:14.863Z","modified":"2026-10-15T21:19:31.233Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:58.630796Z"}]}}