{"id":"CVE-2020-4821","aliases":["EUVD-2020-26068","GHSA-gg8g-78jx-gxgc"],"status":"published","title":"IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1,...","description":"IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1, under certain configurations, could allow a user to bypass authentication mechanisms using an empty password string. IBM X-Force ID: 189834","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AC:H/A:N/C:H/S:U/AV:N/PR:N/UI:N/I:N/RL:O/RC:C/E:U","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.02002,"percentile":0.80944,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2021-07-16T16:50:24Z","modified":"2026-06-17T03:20:30Z","products":[{"vendor":"ibm","product":"infosphere change data capture for z/os"},{"vendor":"ibm","product":"infosphere data replication"},{"vendor":"ibm","product":"infosphere_change_data_capture"},{"vendor":"ibm","product":"infosphere_data_replication"}],"references":[{"url":"https://www.ibm.com/support/pages/node/6472911","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.ibm.com/support/pages/node/6472909","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/189834","tags":["vdb-entry","x_refsource_XF","x_transferred","VDB Entry","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4821"},{"url":"https://github.com/advisories/GHSA-gg8g-78jx-gxgc"}],"sources":{"cve":[{"id":"CVE-2020-4821","description":"IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1, under certain configurations, could allow a user to bypass authentication mechanisms using an empty password string. IBM X-Force ID: 189834","status":"published","published":"2021-07-16T16:50:24.014Z","modified":"2024-09-17T00:11:05.468Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AC:H/A:N/C:H/S:U/AV:N/PR:N/UI:N/I:N/RL:O/RC:C/E:U","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:55.797746Z"}],"euvd":[{"id":"EUVD-2020-26068","description":"IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1, under certain configurations, could allow a user to bypass authentication mechanisms using an empty password string. IBM X-Force ID: 189834","status":"published","published":"2021-07-16T16:50:24Z","modified":"2024-09-17T00:11:05Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AC:H/A:N/C:H/S:U/AV:N/PR:N/UI:N/I:N/RL:O/RC:C/E:U","level":"medium"}],"updated_at":"2026-11-03T00:29:01.573177Z"}],"ghsa":[{"id":"GHSA-gg8g-78jx-gxgc","title":"IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1,...","description":"IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1, under certain configurations, could allow a user to bypass authentication mechanisms using an empty password string. IBM X-Force ID: 189834","status":"published","published":"2022-05-24T19:08:17Z","modified":"2023-01-30T05:00:52Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:46:17.249643Z"}],"nvd":[{"id":"CVE-2020-4821","description":"IBM InfoSphere Data Replication 11.4 and IBM InfoSphere Change Data Capture for z/OS 10.2.1, under certain configurations, could allow a user to bypass authentication mechanisms using an empty password string. IBM X-Force ID: 189834","status":"published","published":"2021-07-16T17:15:11.993Z","modified":"2026-06-17T03:20:30.78Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:06:44.292752Z"}]}}