{"id":"CVE-2026-18221","state":"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.","publishedAt":"2026-09-04T16:25:59.620Z","updatedAt":"2026-09-08T17:22:39.764Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"ibm"},"assigner":"ibm","products":["IBM i"],"affected":[{"vendor":"IBM","product":"i","versions":[{"version":"7.6","status":"affected"},{"version":"7.5","status":"affected"},{"version":"7.4","status":"affected"},{"version":"7.3","status":"affected"}],"cpes":["cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7286186"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/18xxx/CVE-2026-18221.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18221","state":"PUBLISHED","datePublished":"2026-09-04T16:25:59.620Z","dateUpdated":"2026-09-08T17:22:39.764Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-07-29T10:16:45.385Z"},"containers":{"cna":{"title":"IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [, ]","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"IBM","product":"i","versions":[{"version":"7.6","status":"affected"},{"version":"7.5","status":"affected"},{"version":"7.4","status":"affected"},{"version":"7.3","status":"affected"}],"cpes":["cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7286186","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":8.1,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287 Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-09-04T16:25:59.620Z"},"solutions":[{"lang":"en","value":"IBM i Release5770-SS1 \nPTF Number(s)PTF Download Link(s)7.6SJ11231\nSJ11230\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11231 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11230 7.5SJ11232\nSJ11233\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11232 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11233 \n7.4SJ11262\nSJ11261 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11262 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11261 \n7.3SJ11234\nSJ11235\n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11234 \n https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11235 \n\n\n\n\nIBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.","supportingMedia":[{"type":"text/html","base64":false,"value":"<div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-SS1 <br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ11231<br/>SJ11230<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11231\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11231</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11230\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11230</a></td></tr><tr><td>7.5</td><td>SJ11232<br/>SJ11233<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11232\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11232</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11233\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11233</a><br/></td></tr><tr><td>7.4</td><td>SJ11262<br/>SJ11261</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11262\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11262</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11261\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11261</a><br/></td></tr><tr><td>7.3</td><td>SJ11234<br/>SJ11235<br/></td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11234\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11234</a><br/><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11235\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11235</a><br/></td></tr></tbody></table></div><p>IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.</p>"}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-08T17:21:54.094713Z","id":"CVE-2026-18221","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-08T17:22:39.764Z"}}]}}}