---
id: CVE-2026-6052
title: >-
  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.
summary: >-
  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.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
vendor: ibm
product: db2
affected:
  - 'db2 >= 11.5.0, <= 11.5.9'
  - 'db2 >= 12.1.0, <= 12.1.4'
published: '2026-05-27'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T20:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-6052'
references:
  - url: 'https://www.ibm.com/support/pages/node/7273557'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.00424
epssPercentile: 0.35117
ingestedAt: '2026-10-14T20:53:12.322Z'
---

## Overview

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

- `db2 >= 11.5.0, <= 11.5.9`
- `db2 >= 12.1.0, <= 12.1.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.