CVE-2023-45177: IBM Mq

Medium severity, CVSS 5.3. EPSS: 0.6% chance of exploitation in the next 30 days.

IBM MQ 9.0 LTS, 9.1 LTS, 9.2 LTS, 9.3 LTS and 9.3 CD is vulnerable to a denial-of-service attack due to an error within the MQ clustering logic. IBM X-Force ID: 268066.

Affected products

• IBM Mq: from 9.0.0.0, before 9.0.0.21 (fixed in 9.0.0.21); from 9.1.0.0, before 9.1.0.18 (fixed in 9.1.0.18); from 9.2.0.0, before 9.2.0.20 (fixed in 9.2.0.20); from 9.3.0, before 9.3.4 (fixed in 9.3.4); from 9.3.0.0, up to and including 9.3.0.10

Published 2024-03-20. Last modified 2026-06-17.