---
id: CVE-2025-2534
title: >-
  IBM Db2 11.1.0 through 11.1.4.7, 11.5.0 through 11.5.9, and 12.1.0 through
  12.1.3 for Linux, UNIX and Windows (includes Db2 Connect Server) is vulnerable
  to a denial of service as the server may crash under certain conditions with a
  spec…
summary: >-
  IBM Db2 11.1.0 through 11.1.4.7, 11.5.0 through 11.5.9, and 12.1.0 through
  12.1.3 for Linux, UNIX and Windows (includes Db2 Connect Server) is vulnerable
  to a denial of service as the server may crash under certain conditions with a
  spec…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-789
vendor: ibm
product: db2
affected:
  - 'db2 >= 11.1.0, <= 11.1.4.7'
  - 'db2 >= 11.5.0, <= 11.5.9'
  - 'db2 >= 12.1.0, <= 12.1.3'
published: '2025-11-07'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-2534'
references:
  - url: 'https://www.ibm.com/support/pages/node/7250472'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.00277
epssPercentile: 0.18423
ingestedAt: '2026-10-07T21:54:14.980Z'
---

## Overview

IBM Db2 11.1.0 through 11.1.4.7, 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and Windows (includes Db2 Connect Server) is vulnerable to a denial of service as the server may crash under certain conditions with a specially crafted query.

## Affected

- `db2 >= 11.1.0, <= 11.1.4.7`
- `db2 >= 11.5.0, <= 11.5.9`
- `db2 >= 12.1.0, <= 12.1.3`

## Remediation

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