CVE-2026-6052: IBM® Db2® is vulnerable to running out of memory when executing certain queries with MDC tables

Published May 27, 2026
·
Updated

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to running out of memory when executing certain queries with MDC tables.

Affected Software

7 affected components
All of the following
Any of the following
IBM DB2>=11.5.0<=11.5.9
IBM DB2>=12.1.0<=12.1.4
Any of the following
IBM AIX
IBM Linux On Ibm Z
Linux Linux kernel
Microsoft Windows
IBM IBM® Db2® on Cloud Pak for Data and Db2 Warehouse on Cloud Pak for Data<=v4.8 v5.0v5.1v5.2v5.3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade IBM Db2 to a version that resolves this vulnerability.

    Fixed in V11.5.9
  2. Upgrade

    Upgrade IBM Db2 to a version that resolves this vulnerability.

    Fixed in V12.1.4

Event History

May 27, 2026
CVE Published
via MITRE·01:09 PM
Data Sourced
via MITRE·01:09 PM
RemedyDescriptionSeverity
Data Sourced
via NVD·02:17 PM
DescriptionSeverityWeaknessAffected Software
Jun 19, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-6052?

CVE-2026-6052 has a high severity rating of 7.5.

2

What systems are affected by CVE-2026-6052?

CVE-2026-6052 affects IBM Db2 versions 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4.

3

How does CVE-2026-6052 manifest?

CVE-2026-6052 can cause IBM Db2 to run out of memory when executing certain queries with MDC tables.

4

How do I fix CVE-2026-6052?

To fix CVE-2026-6052, download the special build containing the interim fix from Fix Central for your version of IBM Db2.

5

What are the potential impacts of CVE-2026-6052?

CVE-2026-6052 can lead to application instability or crashes due to memory exhaustion.

Company

Resources

Contact

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