{"id":"CVE-2026-21514","aliases":["EUVD-2026-7334","GHSA-cjj3-m869-748g"],"status":"published","title":"Microsoft Word Security Feature Bypass Vulnerability","description":"Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature 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:F/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01587,"percentile":0.75963,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-807"],"published":"2026-02-10T17:51:34Z","modified":"2026-08-19T16:26:04Z","kev":{"date_added":"2026-02-10","due_date":"2026-03-03","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2026-02-10"},{"source":"kev","since":"2026-02-10"}],"exploits":[{"source":"pocgithub","id":"ChaitanyaHaritash/CVE-2026-21514_CVE-2026-21510","title":"ChaitanyaHaritash/CVE-2026-21514_CVE-2026-21510","date":"2026-05-04","url":"https://github.com/ChaitanyaHaritash/CVE-2026-21514_CVE-2026-21510"}],"products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"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":"office"},{"vendor":"microsoft","product":"office_long_term_servicing_channel"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21514","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21514","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21514"},{"url":"https://github.com/advisories/GHSA-cjj3-m869-748g"}],"sources":{"cve":[{"id":"CVE-2026-21514","title":"Microsoft Word Security Feature Bypass Vulnerability","description":"Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-02-10T17:51:34.153Z","modified":"2026-08-19T16:26:04.274Z","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:F/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-807"],"updated_at":"2026-11-02T13:41:42.05254Z"}],"euvd":[{"id":"EUVD-2026-7334","description":"Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-02-10T17:51:34Z","modified":"2026-08-19T16:26:04Z","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:F/RL:O/RC:C","level":"high"}],"exploited_since":"2026-02-10","updated_at":"2026-11-02T18:01:44.172516Z"}],"ghsa":[{"id":"GHSA-cjj3-m869-748g","title":"Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an...","description":"Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-02-10T18:30:42Z","modified":"2026-02-10T21:31:29Z","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-807"],"updated_at":"2026-11-02T15:06:08.47148Z"}],"kev":[{"id":"CVE-2026-21514","title":"Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision Vulnerability","description":"Microsoft Office Word contains a reliance on untrusted inputs in a security decision vulnerability that could allow an authorized attacker to elevate privileges locally.","cwes":["CWE-807"],"kev":{"date_added":"2026-02-10","due_date":"2026-03-03","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2026-21514","description":"Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-02-10T18:16:33.803Z","modified":"2026-06-17T10:18:45.733Z","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-807"],"updated_at":"2026-11-02T14:12:05.52517Z"}]}}