{"id":"CVE-2026-66806","aliases":["EUVD-2026-56748","GHSA-vr2p-489v-8hm2"],"status":"published","title":"Microsoft Office Word Information Disclosure Vulnerability","description":"Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/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":0.00435,"percentile":0.38211,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125","CWE-193"],"published":"2026-08-11T17:07:02Z","modified":"2026-11-10T22:00:51Z","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 ltsc 2021"},{"vendor":"microsoft","product":"microsoft office ltsc 2024"},{"vendor":"microsoft","product":"microsoft word 2016"},{"vendor":"microsoft","product":"office_2019"},{"vendor":"microsoft","product":"office_2021"},{"vendor":"microsoft","product":"office_2024"},{"vendor":"microsoft","product":"word"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66806","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66806"},{"url":"https://github.com/advisories/GHSA-vr2p-489v-8hm2"}],"sources":{"cve":[{"id":"CVE-2026-66806","title":"Microsoft Office Word Information Disclosure Vulnerability","description":"Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:07:02.214Z","modified":"2026-11-10T22:00:51.064Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/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-193","CWE-125"],"updated_at":"2026-11-10T23:49:30.334266Z"}],"euvd":[{"id":"EUVD-2026-56748","description":"Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:07:02Z","modified":"2026-11-10T22:00:51Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T23:24:16.815365Z"}],"ghsa":[{"id":"GHSA-vr2p-489v-8hm2","title":"Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information...","description":"Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-08-11T18:31:41Z","modified":"2026-08-11T18:31:49Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:10:20.59674Z"}],"nvd":[{"id":"CVE-2026-66806","description":"Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:19:01.98Z","modified":"2026-08-14T13:06:17.913Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-125","CWE-193"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}