CVE-2026-12148: IBM MQ Deserialization of Untrusted Data

Published Oct 15, 2026
·
Updated

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to unrestricted Java deserialization in the MQ Classes for Java

Other sources

IBM MQ Operator could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to unrestricted Java deserialization in the MQ Classes for Java.

— MITRE

Affected Software

2 affected components
IBM MQ Operator<=SC2: v3.2.0 - v3.2.29 CD:  v3.3.0, v3.4.0, v3.4.1, v3.5.0, v3.5.1 - v3.5.3, v3.6.0 - v3.6.4, v3.7.0 - v3.7.2, v3.8.0, v3.8.1, v3.9.0, v3.9.1, v3.9.2, v4.0.0, v4.0.1, v4.0.2, v4.0.3, v4.0.4 LTS: v2.0.0 - 2.0.29
IBM supplied MQ Advanced container images<=SC2: 9.4.0.6-r1, 9.4.0.6-r2, 9.4.0.7-r1, 9.4.0.10-r1, 9.4.0.10-r2, 9.4.0.11-r1, 9.4.0.11-r2, 9.4.0.11-r3, 9.4.0.12-r1, 9.4.0.15-r1 - 9.4.0.15-r4, 9.4.0.16-r1, 9.4.0.16-r2, 9.4.0.17-r1, 9.4.0.17-r2, 9.4.0.20-r1, 9.4.0.21-r1, 9.4.0.21-r2, 9.4.0.25-r1 - 9.4.0.25-r3, 9.4.0.26-r1CD: 9.4.1.0-r1, 9.4.1.0-r2, 9.4.1.1-r1, 9.4.2.0-r1, 9.4.2.0-r2, 9.4.2.1-r1, 9.4.2.1-r2, 9.4.3.0-r1, 9.4.3.0-r2, 9.4.3.1-r1 - 9.4.3.1-r3, 9.4.4.0-r1 - 9.4.4.0-r4, 9.4.4.1-r1, 9.4.5.0-r1, 9.4.5.0-r2, 9.4.5.1-r1, 10.0.0.0-r1 - 10.0.0.0-r4, 10.0.0.5-r1LTS: 9.3.0.0-r1, 9.3.0.0-r2, 9.3.0.0-r3, 9.3.0.1-r1, 9.3.0.1-r2, 9.3.0.1-r3, 9.3.0.1-r4, 9.3.0.3-r1, 9.3.0.4-r1, 9.3.0.4-r2, 9.3.0.5-r1, 9.3.0.5-r2, 9.3.0.5-r3, 9.3.0.6-r1, 9.3.0.10-r1, 9.3.0.10-r2, 9.3.0.11-r1,9.3.0.11-r2, 9.3.0.15-r1, 9.3.0.16-r1, 9.3.0.16-r2, 9.3.0.17-r1, 9.3.0.17-r2, 9.3.0.17-r3, 9.3.0.20-r1, 9.3.0.20-r2, 9.3.0.21-r1, 9.3.0.21-r2, 9.3.0.21-r3, 9.3.0.25-r1, 9.4.0.0-r1, 9.4.0.0-r2, 9.4.0.0-r3, 9.4.0.5-r1, 9.4.0.5-r2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade IBM MQ Container to a version that resolves this vulnerability.

    Fixed in 10.0.0.5-r2
  2. Upgrade

    Upgrade IBM MQ Container to a version that resolves this vulnerability.

    Fixed in 10.0.1.0-r1
  3. Upgrade

    Upgrade IBM MQ Advanced to a version that resolves this vulnerability.

    Fixed in 9.4.0.26-r2
  4. Upgrade

    Upgrade IBM MQ Operator to a version that resolves this vulnerability.

    Fixed in v3.2.30
  5. Upgrade

    Upgrade IBM MQ Operator to a version that resolves this vulnerability.

    Fixed in v4.0.5
  6. Upgrade

    Upgrade IBM MQ Operator to a version that resolves this vulnerability.

    Fixed in v4.1.0

Event History

Oct 15, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Oct 19, 2026
CVE Published
via MITRE·04:40 PM
Data Sourced
via MITRE·04:40 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·05:17 PM
DescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

Which deployments should be assessed for this issue?

Assess IBM MQ Operator deployments and IBM-supplied MQ Advanced container images, as these are the listed affected software.

2

What level of access does an attacker need?

An attacker must be authenticated. No user interaction is required.

3

What could exploitation allow?

Successful exploitation could cause a denial of service or potentially allow arbitrary code execution, affecting confidentiality, integrity, and availability.

Company

Resources

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