{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-17255","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","state":"PUBLISHED","assignerShortName":"ibm","dateReserved":"2026-07-24T22:14:14.142Z","datePublished":"2026-09-04T16:39:08.401Z","dateUpdated":"2026-09-10T15:06:37.340Z"},"containers":{"cna":{"providerMetadata":{"orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","shortName":"ibm","dateUpdated":"2026-09-04T16:39:08.401Z"},"title":"IBM i is Affected By Denial of Service Vulnerability []","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","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 validation of the prefix length in ICMPv6 Router Advertisements.","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 validation of the prefix length in ICMPv6 Router Advertisements.</p>"}]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7286093","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":4.3,"vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}}],"solutions":[{"lang":"en","value":"IBM i Release5770-999 \nPTF Number(s)PTF Download Link(s)7.6MJ11322 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11322 7.5MJ11323 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11323 7.4MJ11324 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11324 7.3MJ11325 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11325 \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>5770-999 <br/>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>MJ11322</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11322\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11322</a></td></tr><tr><td>7.5</td><td>MJ11323</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11323\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11323</a></td></tr><tr><td>7.4</td><td>MJ11324</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11324\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11324</a></td></tr><tr><td>7.3</td><td>MJ11325</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11325\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11325</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":"2026-09-09T18:27:28.122624Z","id":"CVE-2026-17255","options":[{"Exploitation":"none"},{"Automatable":"no"},{"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":"2026-09-10T15:06:37.340Z"}}]}}