What is CVE-2026-12354?

CVE-2026-12354 is a high-severity vulnerability in IBM Mq, classified under Improper Control of Dynamically-Managed Code Resources. CVSS score: 7.5/10. Published 2026-09-15.

How severe is CVE-2026-12354?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in IBM Mq

CVE-2026-12354

IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to execute arbitrary code on the application server due to improper validation of JNDI names in the Resource Adapter Installation Verification Test application.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Mq — versions 10.0.0.0

Weakness classification (CWE)

CWE-913 — Improper Control of Dynamically-Managed Code Resources

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-12354?: CVE-2026-12354 is a high-severity vulnerability in IBM Mq, classified under Improper Control of Dynamically-Managed Code Resources. CVSS score: 7.5/10. Published 2026-09-15.
How severe is CVE-2026-12354?: High severity. CVSS v3 base score is 7.5 out of 10.