{"id":"CVE-2026-64904","aliases":["EUVD-2026-56707","GHSA-8hf2-fghf-qjf2"],"status":"published","title":"Microsoft Office Remote Code Execution Vulnerability","description":"Access of resource using incompatible type ('type confusion') in Microsoft Office 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":"2026-11-10","score":0.00466,"percentile":0.4069,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-843"],"published":"2026-08-11T17:06:38Z","modified":"2026-10-30T17:22:25Z","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 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_2019"},{"vendor":"microsoft","product":"office_2021"},{"vendor":"microsoft","product":"office_2024"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64904","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64904"},{"url":"https://github.com/advisories/GHSA-8hf2-fghf-qjf2"}],"sources":{"cve":[{"id":"CVE-2026-64904","title":"Microsoft Office Remote Code Execution Vulnerability","description":"Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-08-11T17:06:38.377Z","modified":"2026-10-30T17:22:25.209Z","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-843"],"updated_at":"2026-11-02T14:19:57.818032Z"}],"euvd":[{"id":"EUVD-2026-56707","description":"Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-08-11T17:06:38Z","modified":"2026-10-30T17:22:25Z","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":"2026-11-02T16:59:03.905686Z"}],"ghsa":[{"id":"GHSA-8hf2-fghf-qjf2","title":"Access of resource using incompatible type ('type confusion') in Microsoft Office allows an...","description":"Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-08-11T18:31:34Z","modified":"2026-08-11T18:31:40Z","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-843"],"updated_at":"2026-11-02T15:10:20.045782Z"}],"nvd":[{"id":"CVE-2026-64904","description":"Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-08-11T17:18:51.323Z","modified":"2026-08-14T15:10:10.12Z","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-843"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}