{"id":"CVE-2026-81858","state":"PUBLISHED","title":"IBM i is Affected By A Denial of Service Vulnerability in Host Servers","description":"IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server.","publishedAt":"2026-10-12T23:22:27.442Z","updatedAt":"2026-10-13T13:48:37.584Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L","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:7.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7290195"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/81xxx/CVE-2026-81858.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-81858","state":"PUBLISHED","datePublished":"2026-10-12T23:22:27.442Z","dateUpdated":"2026-10-13T13:48:37.584Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-08-27T16:37:56.325Z"},"containers":{"cna":{"title":"IBM i is Affected By A Denial of Service Vulnerability in Host Servers","descriptions":[{"lang":"en","value":"IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server."}],"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:7.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7290195","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":5.4,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"CWE-125 Out-of-bounds Read","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-10-12T23:22:27.442Z"},"solutions":[{"lang":"en","value":"IBM i Release5770-SS1 \nPTF Number(s)PTF Download Link(s)7.6SJ11622 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11622 7.5SJ11621 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11621 7.4SJ11620 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11620 7.3SJ11619 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11619 \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>SJ11622</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11622\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11622</a></td></tr><tr><td>7.5</td><td>SJ11621</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11621\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11621</a></td></tr><tr><td>7.4</td><td>SJ11620</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11620\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11620</a></td></tr><tr><td>7.3</td><td>SJ11619</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11619\" rel=\"nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11619</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":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-81858","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-13T13:20:42.810634Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-13T13:48:37.584Z"}}]}}}