{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16931","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","state":"PUBLISHED","assignerShortName":"ibm","dateReserved":"2026-07-24T07:27:02.461Z","datePublished":"2026-08-12T17:27:35.728Z","dateUpdated":"2026-08-12T18:52:18.936Z"},"containers":{"cna":{"providerMetadata":{"orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","shortName":"ibm","dateUpdated":"2026-08-12T17:27:35.728Z"},"title":"IBM i is Affected By A Denial of Service Vulnerability []","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-835","description":"CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')","type":"CWE"}]}],"affected":[{"vendor":"IBM","product":"i","versions":[{"status":"affected","version":"7.6"},{"status":"affected","version":"7.5"},{"status":"affected","version":"7.4"},{"status":"affected","version":"7.3"}],"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:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options.</p>"}]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7283288","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}],"solutions":[{"lang":"en","value":"IBM strongly recommends addressing the vulnerability now.\n\nIBM i Release5770-999\nPTF Number(s)PTF Download Link(s)7.6MJ10911 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10911 7.5MJ10912 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10912 7.4MJ10913 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10913 7.3MJ10914 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10914 \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":"<p><strong>IBM strongly recommends addressing the vulnerability now.</strong></p><div><table><colgroup><col/><col/><col/></colgroup><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-999<br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>MJ10911</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10911\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10911</a></td></tr><tr><td>7.5</td><td>MJ10912</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10912\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10912</a></td></tr><tr><td>7.4</td><td>MJ10913</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10913\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10913</a></td></tr><tr><td>7.3</td><td>MJ10914</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10914\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ10914</a></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":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-12T18:52:11.894592Z","id":"CVE-2026-16931","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-12T18:52:18.936Z"}}]}}