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01 Record

CVE-2026-11728

IBM MQ .NET client is vulnerable to remote code execution

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

02 Description

IBM MQ .NET client is vulnerable to remote code execution

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 ImpacttotalSuccessful exploitation gives total 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
0.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 28.8% 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:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-09-16.
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
2026-09-15 17:42Z1 MO AGO
Last updated
2026-09-16 03:56Z1 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:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
Data version
5.2
Document digest
686222fe1434bb9463bdbf1047ba793af50ac2f4b8cfe1064cb354ee22af87c2

05 Affected products

VendorProductVersionsPlatforms
IBMMQ9.1.0.0 to 9.1.0.37 LTS, 9.2.0.0 to 9.2.0.43 LTS, 9.3.0.0 to 9.3.0.41 LTS, 9.3.0.0 to 9.3.5.1 CD, 9.4.0.0 to 9.4.0.25 LTS, 9.4.0.0 to 9.4.5.1 CD, 10.0.0.0—

06 References

07 Remediation

This issue was addressed under Known Issue DT473417 IBM MQ version 9.1 LTS Apply cumulative security update 9.1.0.38 IBM MQ version 9.2 LTS Apply cumulative security update 9.2.0.44 IBM MQ version 9.3 LTS Apply cumulative security update 9.3.0.42 IBM MQ version 9.4 LTS Apply cumulative security update 9.4.0.26 IBM MQ version 9.3 CD, 9.4 CD and 10.0.0.0 Upgrade to IBM MQ version 10.0.0.5