{"id":"CVE-2026-18221","aliases":["EUVD-2026-71607","GHSA-7wjh-qq66-9589"],"status":"published","title":"IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [, ]","description":"IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to improper validation of client-supplied authentication parameters.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00617,"percentile":0.50029,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-09-04T16:25:59Z","modified":"2026-09-08T19:40:12Z","products":[{"vendor":"ibm","product":"i"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7286186","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18221"},{"url":"https://github.com/advisories/GHSA-7wjh-qq66-9589"}],"sources":{"cve":[{"id":"CVE-2026-18221","title":"IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [, ]","description":"IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to improper validation of client-supplied authentication parameters.","status":"published","published":"2026-09-04T16:25:59.62Z","modified":"2026-09-08T17:22:39.764Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:20:12.260247Z"}],"euvd":[{"id":"EUVD-2026-71607","description":"IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to improper validation of client-supplied authentication parameters.","status":"published","published":"2026-09-04T16:25:59Z","modified":"2026-09-08T17:22:39Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:28.997972Z"}],"ghsa":[{"id":"GHSA-7wjh-qq66-9589","title":"IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to...","description":"IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to improper validation of client-supplied authentication parameters.","status":"published","published":"2026-09-04T18:31:30Z","modified":"2026-09-04T18:31:31Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:11:23.167848Z"}],"nvd":[{"id":"CVE-2026-18221","description":"IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to improper validation of client-supplied authentication parameters.","status":"published","published":"2026-09-04T17:16:56.15Z","modified":"2026-09-08T19:40:12.663Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"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"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:44.082631Z"}]}}