CVE-2026-11378
High
Description
IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to an integer overflow in distribution list processing.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Ibm Mq
PublishedSep 18, 2026
First seenSep 18, 2026
Weakness typeCWE-190Integer overflow
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ibm mq | 9.1.0.0 ≤ v ≤ 9.1.0.37, 9.2.0.0 ≤ v ≤ 9.2.0.43, 9.3.0.0 ≤ v ≤ 9.3.0.41, 9.3.0.0 ≤ v ≤ 9.3.5.1, 9.4.0.0 ≤ v ≤ 9.4.0.25, 9.4.0.0 ≤ v ≤ 9.4.5.1, 10.0.0.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.