{"id":"CVE-2026-64899","aliases":["EUVD-2026-56704","GHSA-2jmj-f42h-x4j9"],"status":"published","title":"Microsoft Office Information Disclosure Vulnerability","description":"Out-of-bounds read in Microsoft Office 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":"2026-11-10","score":0.00541,"percentile":0.4583,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-08-11T17:06:36Z","modified":"2026-11-10T22:00:24Z","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-2026-64899","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64899"},{"url":"https://github.com/advisories/GHSA-2jmj-f42h-x4j9"}],"sources":{"cve":[{"id":"CVE-2026-64899","title":"Microsoft Office Information Disclosure Vulnerability","description":"Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:06:36.65Z","modified":"2026-11-10T22:00:24.568Z","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-125"],"updated_at":"2026-11-10T23:49:30.334266Z"}],"euvd":[{"id":"EUVD-2026-56704","description":"Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:06:36Z","modified":"2026-11-10T22:00:24Z","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-2jmj-f42h-x4j9","title":"Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information...","description":"Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-08-11T18:31:33Z","modified":"2026-08-11T18:31:34Z","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":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-64899","description":"Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:18:50.693Z","modified":"2026-08-14T14:44:19.903Z","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"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}