What is CVE-2026-12728?

CVE-2026-12728 is a high-severity vulnerability in IBM Mq. CVSS score: 8.8/10. Published 2026-09-15.

How severe is CVE-2026-12728?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in IBM Mq

CVE-2026-12728

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 due to a deserialization of untrusted data.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Mq — versions 10.0.0.0

References

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

Frequently asked questions

What is CVE-2026-12728?: CVE-2026-12728 is a high-severity vulnerability in IBM Mq. CVSS score: 8.8/10. Published 2026-09-15.
How severe is CVE-2026-12728?: High severity. CVSS v3 base score is 8.8 out of 10.