---
id: CVE-2025-36136
title: >-
  IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and
  Windows (includes DB2 Connect Server) could allow a local user to cause a
  denial of service due to the database monitor script incorrectly detecting
  that the in…
summary: >-
  IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and
  Windows (includes DB2 Connect Server) could allow a local user to cause a
  denial of service due to the database monitor script incorrectly detecting
  that the in…
severity: medium
cvss: 5.1
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: ibm
product: db2
affected:
  - 'db2 >= 11.5.0, <= 11.5.9'
  - 'db2 >= 12.1.0, <= 12.1.3'
published: '2025-11-07'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-36136'
references:
  - url: 'https://www.ibm.com/support/pages/node/7250485'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.00107
epssPercentile: 0.01061
ingestedAt: '2026-09-30T23:29:32.464Z'
---

## Overview

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a local user to cause a denial of service due to the database monitor script incorrectly detecting that the instance is still starting under specific conditions.

## Affected

- `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.