{"id":"CVE-2021-20147","aliases":["EUVD-2021-7604","GHSA-j385-q64g-xhxj"],"status":"published","title":"ManageEngine ADSelfService Plus below build 6116 contains an observable response discrepancy in...","description":"ManageEngine ADSelfService Plus below build 6116 contains an observable response discrepancy in the UMCP operation of the ChangePasswordAPI. This allows an unauthenticated remote attacker to determine whether a Windows domain user exists.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.07124,"percentile":0.94299,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-203"],"published":"2022-01-03T21:07:10Z","modified":"2026-06-17T03:33:21Z","products":[{"vendor":"zohocorp","product":"manageengine adselfservice plus"},{"vendor":"zohocorp","product":"manageengine_adselfservice_plus"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2021-52","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20147"},{"url":"https://github.com/advisories/GHSA-j385-q64g-xhxj"}],"sources":{"cve":[{"id":"CVE-2021-20147","description":"ManageEngine ADSelfService Plus below build 6116 contains an observable response discrepancy in the UMCP operation of the ChangePasswordAPI. This allows an unauthenticated remote attacker to determine whether a Windows domain user exists.","status":"published","published":"2022-01-03T21:07:10Z","modified":"2024-08-03T17:30:07.495Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-7604","description":"ManageEngine ADSelfService Plus below build 6116 contains an observable response discrepancy in the UMCP operation of the ChangePasswordAPI. This allows an unauthenticated remote attacker to determine whether a Windows domain user exists.","status":"published","published":"2022-01-03T21:07:10Z","modified":"2024-08-03T17:30:07Z","updated_at":"2026-11-03T03:25:09.841069Z"}],"ghsa":[{"id":"GHSA-j385-q64g-xhxj","title":"ManageEngine ADSelfService Plus below build 6116 contains an observable response discrepancy in...","description":"ManageEngine ADSelfService Plus below build 6116 contains an observable response discrepancy in the UMCP operation of the ChangePasswordAPI. This allows an unauthenticated remote attacker to determine whether a Windows domain user exists.","status":"published","published":"2022-01-04T00:00:42Z","modified":"2023-02-03T05:03:53Z","cwes":["CWE-203"],"updated_at":"2026-11-02T14:53:26.852274Z"}],"nvd":[{"id":"CVE-2021-20147","description":"ManageEngine ADSelfService Plus below build 6116 contains an observable response discrepancy in the UMCP operation of the ChangePasswordAPI. This allows an unauthenticated remote attacker to determine whether a Windows domain user exists.","status":"published","published":"2022-01-03T22:15:08.503Z","modified":"2026-06-17T03:33:21.153Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:07:03.418194Z"}]}}