CVE-2023-26285: IBM MQ denial of service

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-05-05 · updated 2026-06-17
Weakness: CWE-119

Description

IBM MQ 9.2 CD, 9.2 LTS, 9.3 CD, and 9.3 LTS could allow a remote attacker to cause a denial of service due to an error processing invalid data. IBM X-Force ID: 248418.

Affected products

IBM MQ Appliance: from 9.2.0.0 before 9.2.0.11; from 9.2.0.0 before 9.2.5.7; from 9.3.0.0 before 9.3.0.5; from 9.3.0.0 before 9.3.2.1 — fixed in 9.2.0.11, 9.2.5.7, 9.3.0.5, 9.3.2.1

How to fix

Upgrade to a fixed version: IBM MQ Appliance 9.2.0.11, 9.2.5.7, 9.3.0.5, 9.3.2.1. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/248418
https://www.ibm.com/support/pages/node/6986563
https://exchange.xforce.ibmcloud.com/vulnerabilities/248418
https://www.ibm.com/support/pages/node/6986563

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