{"id":"CVE-2021-20631","aliases":["EUVD-2021-8049","GHSA-7m7w-wrm8-m78q"],"status":"published","title":"Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows...","description":"Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows authenticated attacker to alter the data of Custom App via unspecified vectors.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00769,"percentile":0.56042,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2021-03-18T00:56:01Z","modified":"2026-06-17T03:34:09Z","products":[{"vendor":"cybozu","product":"office"},{"vendor":"cybozu, inc.","product":"cybozu office"}],"references":[{"url":"https://jvn.jp/en/jp/JVN45797538/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://kb.cybozu.support/article/36871/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20631"},{"url":"https://github.com/advisories/GHSA-7m7w-wrm8-m78q"}],"sources":{"cve":[{"id":"CVE-2021-20631","description":"Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows authenticated attacker to alter the data of Custom App via unspecified vectors.","status":"published","published":"2021-03-18T00:56:01Z","modified":"2024-08-03T17:45:44.986Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8049","description":"Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows authenticated attacker to alter the data of Custom App via unspecified vectors.","status":"published","published":"2021-03-18T00:56:01Z","modified":"2024-08-03T17:45:44Z","updated_at":"2026-11-03T03:25:08.888273Z"}],"ghsa":[{"id":"GHSA-7m7w-wrm8-m78q","title":"Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows...","description":"Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows authenticated attacker to alter the data of Custom App via unspecified vectors.","status":"published","published":"2022-05-24T17:44:43Z","modified":"2023-01-29T05:06:05Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:45:56.584389Z"}],"nvd":[{"id":"CVE-2021-20631","description":"Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows authenticated attacker to alter the data of Custom App via unspecified vectors.","status":"published","published":"2021-03-18T01:15:12.013Z","modified":"2026-06-17T03:34:09.223Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:50.805771Z"}]}}