Denial of Service and Code Execution Risk in IBM MQ Operator
CVE-2026-12148

7.5HIGH

Key Information:

Vendor

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

What is CVE-2026-12148?

The IBM MQ Operator is susceptible to a serious vulnerability that allows authenticated attackers to exploit unrestricted Java deserialization. This flaw could lead to a denial of service, which might disrupt system operations, or even permit the execution of arbitrary code, enabling attackers to take control of affected systems and applications. Organizations using IBM MQ should implement the latest security patches immediately to mitigate these risks.

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:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.