IBM MQ queue manager is vulnerable to unauthenticated remote code execution

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-10027
StatePUBLISHED
Assigneribm
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-18 16:17:03 UTC
Updated2026-09-19 04:17:49 UTC
DescriptionIBM MQ could allow a remote attacker to cause a denial of service or execute arbitrary code due to a buffer overflow when processing malformed compressed data on channels configured with compression enabled.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA IBM MQ affected 9.1.0.0 9.1.0.37 LTS semver Not specified
CNA IBM MQ affected 9.2.0.0 9.2.0.43 LTS semver Not specified
CNA IBM MQ affected 9.3.0.0 9.3.0.41 LTS semver Not specified
CNA IBM MQ affected 9.3.0.0 9.3.5.1 CD semver Not specified
CNA IBM MQ affected 9.4.0.0 9.4.0.25 LTS semver Not specified
CNA IBM MQ affected 9.4.0.0 9.4.5.1 CD semver Not specified
CNA IBM MQ affected 10.0.0.0 Not specified

References

ReferenceSourceLinkTags
www.ibm.com/support/pages/node/7284893 [email protected] www.ibm.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: This issue was addressed under Known Issue DT472389 IBM MQ version 9.1 LTS Apply cumulative security update 9.1.0.38 https://www.ibm.com/support/pages/downloading-ibm-mq-91-lts IBM MQ version 9.2 LTS Apply cumulative security update 9.2.0.44 https://www.ibm.com/support/pages/downloading-ibm-mq-92-lts IBM MQ version 9.3 LTS Apply cumulative security update 9.3.0.42 https://www.ibm.com/support/pages/downloading-ibm-mq-93-lts IBM MQ version 9.4 LTS Apply cumulative security update https://www.ibm.com/support/pages/downloading-ibm-mq-94-lts  9.4.0.26 https://www.ibm.com/support/pages/downloading-ibm-mq-94-lts IBM MQ version 9.3 CD, 9.4 CD and 10.0.0.0 Upgrade to IBM MQ version 10.0.0.5 https://www.ibm.com/support/pages/downloading-ibm-mq-100

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