CVE-2019-4614

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-01-28 · updated 2026-06-17

Description

IBM MQ and IBM MQ Appliance 8.0 and 9.0 LTS client connecting to a Queue Manager could cause a SIGSEGV denial of service caused by converting an invalid message. IBM X-Force ID: 168639.

Affected products

IBM MQ: from 8.0.0.0 before 8.0.0.14; from 9.0.0.0 before 9.0.0.8; from 9.1.0 before 9.1.4; from 9.1.0.0 before 9.1.0.4 — fixed in 8.0.0.14, 9.0.0.8, 9.1.0.4, 9.1.4
IBM MQ Appliance: from 8.0.0.0 before 8.0.0.14; from 9.1.0 before 9.1.4; from 9.1.0.0 before 9.1.0.4 — fixed in 8.0.0.14, 9.1.0.4, 9.1.4

How to fix

Upgrade to a fixed version: IBM MQ 8.0.0.14, 9.0.0.8, 9.1.0.4, 9.1.4; IBM MQ Appliance 8.0.0.14, 9.1.0.4, 9.1.4. Check the vendor advisory for mitigations.

References

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