{"id":"CVE-2026-109491","aliases":["EUVD-2026-121581","GHSA-r74h-h8j8-9r5x"],"status":"published","title":"Microsoft Office Word Remote Code Execution Vulnerability","description":"Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/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":"2026-11-14","score":0.00704,"percentile":0.53873,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-11-10T18:15:34Z","modified":"2026-11-10T21:32:38Z","products":[{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"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"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109491","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109491"},{"url":"https://github.com/advisories/GHSA-r74h-h8j8-9r5x"}],"sources":{"cve":[{"id":"CVE-2026-109491","title":"Microsoft Office Word Remote Code Execution Vulnerability","description":"Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T18:15:34.29Z","modified":"2026-11-13T18:04:28.492Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-10T19:39:57.855077Z"}],"euvd":[{"id":"EUVD-2026-121581","description":"Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T18:15:34Z","modified":"2026-11-13T18:04:28Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T23:24:26.96779Z"}],"ghsa":[{"id":"GHSA-r74h-h8j8-9r5x","title":"Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a...","description":"Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T21:32:29Z","modified":"2026-11-10T21:32:38Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-10T21:57:48.570264Z"}],"nvd":[{"id":"CVE-2026-109491","description":"Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T19:18:17.767Z","modified":"2026-11-10T21:18:09.43Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-11T00:21:54.23974Z"}]}}