Deserialization Vulnerability in IBM MQ Affected Versions
CVE-2026-12728

8.8HIGH

Key Information:

Vendor

IBM
Status
MQ
Vendor
CVE Published:
15 September 2026

What is CVE-2026-12728?

A deserialization vulnerability has been identified in IBM MQ product versions, which allows authenticated attackers to execute arbitrary code. This occurs due to improper handling of untrusted data during the deserialization process. Organizations using affected versions must apply the necessary security updates to mitigate this risk effectively.

Affected Version(s)

MQ 9.1.0.0 <= 9.1.0.37 LTS

MQ 9.2.0.0 <= 9.2.0.43 LTS

MQ 9.3.0.0 <= 9.3.0.41 LTS

References

https://www.ibm.com/support/pages/node/7284942
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.