{"id":"CVE-2026-72974","aliases":["EUVD-2026-73733","GHSA-hh7h-258w-8hwv"],"status":"published","title":"Microsoft Office Excel Information Disclosure Vulnerability","description":"Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00922,"percentile":0.60774,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-126"],"published":"2026-09-08T17:17:43Z","modified":"2026-11-10T21:36:47Z","products":[{"vendor":"microsoft","product":"365_apps"},{"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 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_2016"},{"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-2026-72974","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72974"},{"url":"https://github.com/advisories/GHSA-hh7h-258w-8hwv"}],"sources":{"cve":[{"id":"CVE-2026-72974","title":"Microsoft Office Excel Information Disclosure Vulnerability","description":"Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T17:17:43.207Z","modified":"2026-11-10T21:36:47.293Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-126"],"updated_at":"2026-11-10T22:48:53.557052Z"}],"euvd":[{"id":"EUVD-2026-73733","description":"Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T17:17:43Z","modified":"2026-11-10T21:36:47Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:47.576985Z"}],"ghsa":[{"id":"GHSA-hh7h-258w-8hwv","title":"Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose...","description":"Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T18:33:13Z","modified":"2026-09-08T18:33:38Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-126"],"updated_at":"2026-11-02T15:11:33.442964Z"}],"nvd":[{"id":"CVE-2026-72974","description":"Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T18:20:23.62Z","modified":"2026-09-17T20:18:08.903Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-126"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}