{"id":"CVE-2025-29979","aliases":["EUVD-2025-14460","GHSA-q2x2-x5wc-3cp8"],"status":"published","title":"Microsoft 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":0.00663,"percentile":0.52148,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122","CWE-787"],"published":"2025-05-13T16:58:38Z","modified":"2026-06-17T09:06:00Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"excel"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office 2016"},{"vendor":"microsoft","product":"microsoft office 2019"},{"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":"office"},{"vendor":"microsoft","product":"office online server"},{"vendor":"microsoft","product":"office_long_term_servicing_channel"},{"vendor":"microsoft","product":"office_online_server"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29979","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-29979"},{"url":"https://github.com/advisories/GHSA-q2x2-x5wc-3cp8"}],"sources":{"cve":[{"id":"CVE-2025-29979","title":"Microsoft 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":"2025-05-13T16:58:38.313Z","modified":"2026-02-13T19:20:59.172Z","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":"2026-11-02T14:32:45.797843Z"}],"euvd":[{"id":"EUVD-2025-14460","description":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.","status":"published","published":"2025-05-13T16:58:38Z","modified":"2026-02-13T19:20:59Z","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":"2026-11-02T19:48:39.007067Z"}],"ghsa":[{"id":"GHSA-q2x2-x5wc-3cp8","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":"2025-05-13T18:30:55Z","modified":"2025-05-19T15:30:38Z","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","CWE-787"],"updated_at":"2026-11-02T15:02:20.924524Z"}],"nvd":[{"id":"CVE-2025-29979","description":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.","status":"published","published":"2025-05-13T17:15:59.11Z","modified":"2026-06-17T09:06:00.98Z","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-787"],"updated_at":"2026-11-02T14:11:07.176032Z"}]}}