{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-11727", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-06-09T02:26:46.975Z", "datePublished": "2026-09-18T19:17:40.499Z", "dateUpdated": "2026-09-18T19:17:40.499Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-09-18T19:17:40.499Z"}, "title": "IBM MQ for HPE NonStop is vulnerable to a denial of service issue", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-122", "description": "CWE-122 Heap-based Buffer Overflow", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "MQ for HPE NonStop", "versions": [{"status": "affected", "version": "8.1.0", "lessThanOrEqual": "8.1.0.40", "versionType": "semver"}], "cpes": ["cpe:2.3:a:ibm:mq_for_hpe_nonstop:8.1.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq_for_hpe_nonstop:8.1.0.40:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 IBM MQ C client could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of queue manager responses when requesting AMS policy data.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 IBM MQ C client could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of queue manager responses when requesting AMS policy data.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7287708", "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"}}], "solutions": [{"lang": "en", "value": "IBM MQ V8.1 for HPE NonStop\u00a08.1.0.40IT49921 Upgrade to CSU 8.1.0.41 https://www.ibm.com/support/fixcentral/swg/selectFixes \n\n\n\n\n\n\n\nIBM strongly recommends addressing this vulnerability now by installing CSU 8.1.0.41.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div><table><tbody><tr><td>\u00a0 IBM MQ V8.1 for HPE NonStop</td><td>\u00a08.1.0.40</td><td>IT49921</td><td><a href=\"https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%7EWebSphere&amp;product=ibm/WebSphere/WebSphere+MQ&amp;release=8.1.0.41&amp;platform=HP+NonStop&amp;function=all&amp;useReleaseAsTarget=true\" rel=\"nofollow\">Upgrade to CSU 8.1.0.41</a></td></tr></tbody></table></div><p></p><p>IBM strongly recommends addressing this vulnerability now by installing CSU 8.1.0.41.</p>"}]}]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:ibm:mq_for_hpe_nonstop:8.1.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq_for_hpe_nonstop:8.1.0.40:*:*:*:*:*:*:*"], "product": "MQ for HPE NonStop", "vendor": "IBM", "versions": [{"lessThanOrEqual": "8.1.0.40", "status": "affected", "version": "8.1.0", "versionType": "semver"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 IBM MQ C client could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of queue manager responses when requesting AMS policy data."}], "id": "CVE-2026-11727", "lastModified": "2026-09-18T20:17:04.050", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}]}, "published": "2026-09-18T20:17:04.050", "references": [{"source": "[email protected]", "url": "https://www.ibm.com/support/pages/node/7287708"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "[email protected]", "type": "Primary"}]}

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