{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-81858", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-08-27T16:37:56.325Z", "datePublished": "2026-10-12T23:22:27.442Z", "dateUpdated": "2026-10-12T23:22:27.442Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-10-12T23:22:27.442Z"}, "title": "IBM i is Affected By A Denial of Service Vulnerability in Host Servers", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read", "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:7.5:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM i 7.3, 7.4, 7.5, and 7.6\u00a0could 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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM i 7.3, 7.4, 7.5, and 7.6&nbsp;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.</p>"}]}], "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"}}], "solutions": [{"lang": "en", "value": "IBM i Release5770-SS1\u00a0\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\u00a0<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>"}]}]}}}

{}

{"affected": [{"affectedData": [{"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:*:*:*:*:*:*:*"], "product": "i", "vendor": "IBM", "versions": [{"status": "affected", "version": "7.6"}, {"status": "affected", "version": "7.5"}, {"status": "affected", "version": "7.4"}, {"status": "affected", "version": "7.3"}]}], "source": "psirt@us.ibm.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "IBM i 7.3, 7.4, 7.5, and 7.6\u00a0could 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."}], "id": "CVE-2026-81858", "lastModified": "2026-10-13T00:17:01.807", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "psirt@us.ibm.com", "type": "Primary"}]}, "published": "2026-10-13T00:17:01.807", "references": [{"source": "psirt@us.ibm.com", "url": "https://www.ibm.com/support/pages/node/7290195"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "psirt@us.ibm.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.3"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "i", "source": "cna", "vendor": "IBM"}, "product": "i", "vendor": "ibm"}], "created": "2026-10-13T00:45:18.817497+00:00", "updated": "2026-10-13T01:30:06.005239+00:00", "vendors": ["ibm", "ibm$PRODUCT$i"]}