Out-of-Bounds Read Vulnerability in IBM MQ Affects Performance
CVE-2026-11831

5.4MEDIUM

Key Information:

Vendor

IBM
Status
MQ Operator
MQ Advanced Container Images
Vendor
CVE Published:
19 October 2026

What is CVE-2026-11831?

An out-of-bounds read vulnerability in IBM MQ can be exploited by an authenticated attacker to trigger a limited denial of service. This occurs when processing a specially crafted client request, leading to leakage of minimal information about the process memory layout. This vulnerability emphasizes the need for constant vigilance and timely patching to ensure system integrity and security.

Affected Version(s)

MQ Advanced container images 9.4.0.6-r1

MQ Advanced container images 9.4.0.6-r2

MQ Advanced container images 9.4.0.7-r1

References

https://www.ibm.com/support/pages/node/7292667
vendor-advisorypatch

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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