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01 Record

CVE-2026-11726

IBM MQ for HPE NonStop is vulnerable to a denial of service issue

HighPUBLISHEDCNA: ibm
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

02 Description

IBM MQ for HPE NonStop is vulnerable to a denial of service issue

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.46% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 39.7% of scored records. A rank, not a probability.
NVD base score
8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-09-22.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-09-18 19:15Z1 MO AGO
Last updated
2026-09-19 14:11Z1 MO AGO
Reserved
2026-06-09
Assigning CNA
ibm
Record state
PUBLISHED
Severity
High (CVSS 8.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weaknesses
Data version
5.2
Document digest
2a11a6d3549e2e5071c68758284fa40ef93947d3bfe24db4d8d660c930c6f545

05 Affected products

VendorProductVersionsPlatforms
IBMMQ for HPE NonStop8.1.0 to 8.1.0.40—

06 References

07 Remediation

IBM MQ V8.1 for HPE NonStop 8.1.0.40IT49920 Upgrade to CSU 8.1.0.41 https://www.ibm.com/support/fixcentral/swg/selectFixes IBM strongly recommends addressing this vulnerability now by installing CSU 8.1.0.41.