{"id":"CVE-2021-31178","aliases":["EUVD-2021-18091","GHSA-gr4f-j3r7-9p3j"],"status":"published","title":"Microsoft Office Information Disclosure Vulnerability","description":"Microsoft Office Information Disclosure Vulnerability","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":"2026-11-12","score":0.16012,"percentile":0.96956,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-191","CWE-200"],"published":"2021-05-11T19:11:28Z","modified":"2026-06-17T03:51:23Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"excel"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft excel 2013 service pack 1"},{"vendor":"microsoft","product":"microsoft excel 2016"},{"vendor":"microsoft","product":"microsoft office 2013 service pack 1"},{"vendor":"microsoft","product":"microsoft office 2016"},{"vendor":"microsoft","product":"microsoft office 2019"},{"vendor":"microsoft","product":"microsoft office online server"},{"vendor":"microsoft","product":"microsoft office web apps server 2013 service pack 1"},{"vendor":"microsoft","product":"office"},{"vendor":"microsoft","product":"office_online_server"},{"vendor":"microsoft","product":"office_web_apps_server"},{"vendor":"microsoft","product":"word"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31178","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31178"},{"url":"https://github.com/advisories/GHSA-gr4f-j3r7-9p3j"}],"sources":{"cve":[{"id":"CVE-2021-31178","title":"Microsoft Office Information Disclosure Vulnerability","description":"Microsoft Office Information Disclosure Vulnerability","status":"published","published":"2021-05-11T19:11:28Z","modified":"2024-08-03T22:55:53.046Z","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"}],"updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-18091","description":"Microsoft Office Information Disclosure Vulnerability","status":"published","published":"2021-05-11T19:11:28Z","modified":"2024-08-03T22:55:53Z","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":"2026-11-03T03:24:40.11662Z"}],"ghsa":[{"id":"GHSA-gr4f-j3r7-9p3j","title":"Microsoft Office Information Disclosure Vulnerability","description":"Microsoft Office Information Disclosure Vulnerability","status":"published","published":"2022-05-24T19:02:01Z","modified":"2023-08-02T00:30:32Z","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-191","CWE-200"],"updated_at":"2026-11-02T14:54:43.567376Z"}],"nvd":[{"id":"CVE-2021-31178","description":"Microsoft Office Information Disclosure Vulnerability","status":"published","published":"2021-05-11T19:15:09.737Z","modified":"2026-06-17T03:51:23.453Z","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:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}