---
id: CVE-2025-36128
title: >-
  IBM MQ 9.1, 9.2, 9.3, 9.4 LTS and 9.3, 9.4 CD is vulnerable to a denial of
  service, caused by improper enforcement of the timeout on individual read
  operations
summary: >-
  IBM MQ 9.1, 9.2, 9.3, 9.4 LTS and 9.3, 9.4 CD is vulnerable to a denial of
  service, caused by improper enforcement of the timeout on individual read
  operations. By conducting slowloris-type attacks, a remote attacker could
  exploit this v…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-772
vendor: ibm
product: mq
affected:
  - mq = 9.1.0.0
  - mq = 9.2.0.0
  - mq = 9.3.0
  - mq = 9.3.0.0
  - mq = 9.4.0
  - mq = 9.4.0.0
published: '2025-10-16'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T10:10:00.193'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-36128'
references:
  - url: 'https://www.ibm.com/support/pages/node/7244480'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.00543
epssPercentile: 0.43837
ingestedAt: '2026-10-09T12:53:29.032Z'
---

## Overview

IBM MQ 9.1, 9.2, 9.3, 9.4 LTS and 9.3, 9.4 CD is vulnerable to a denial of service, caused by improper enforcement of the timeout on individual read operations. By conducting slowloris-type attacks, a remote attacker could exploit this vulnerability to cause a denial of service.

## Affected

- `mq = 9.1.0.0`
- `mq = 9.2.0.0`
- `mq = 9.3.0`
- `mq = 9.3.0.0`
- `mq = 9.4.0`
- `mq = 9.4.0.0`

## Remediation

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