{"id":"CVE-2026-11727","state":"PUBLISHED","title":"IBM MQ for HPE NonStop is vulnerable to a denial of service issue","description":"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.","publishedAt":"2026-09-18T19:17:40.499Z","updatedAt":"2026-09-22T03:55:57.218Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"ibm"},"assigner":"ibm","products":["IBM MQ for HPE NonStop"],"affected":[{"vendor":"IBM","product":"MQ for HPE NonStop","versions":[{"version":"8.1.0","status":"affected","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:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7287708"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/11xxx/CVE-2026-11727.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-11727","state":"PUBLISHED","datePublished":"2026-09-18T19:17:40.499Z","dateUpdated":"2026-09-22T03:55:57.218Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-06-09T02:26:46.975Z"},"containers":{"cna":{"title":"IBM MQ for HPE NonStop is vulnerable to a denial of service issue","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."}],"affected":[{"vendor":"IBM","product":"MQ for HPE NonStop","versions":[{"version":"8.1.0","status":"affected","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:*:*:*:*:*:*:*"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122 Heap-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-09-18T19:17:40.499Z"},"solutions":[{"lang":"en","value":"IBM MQ V8.1 for HPE NonStop 8.1.0.40IT49921 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>  IBM MQ V8.1 for HPE NonStop</td><td> 8.1.0.40</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>"}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-21T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-11727"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-22T03:55:57.218Z"}}]}}}