What is CVE-2026-12669?

CVE-2026-12669 is a low-severity vulnerability in IBM Mq Advanced Container Images, classified under Out-of-bounds Read. CVSS score: 3.1/10. Published 2026-10-19.

How severe is CVE-2026-12669?

Low severity. CVSS v3 base score is 3.1 out of 10.

Out-of-bounds Read in IBM Mq Advanced Container Images

CVE-2026-12669

IBM MQ could allow an authenticated attacker to trigger a minor out-of-bounds read when sending malformed compressed data, though the data is not disclosed and the request is rejected.

Vulnerability class: Buffer Overflow

Published 2026-10-19 · last modified 2026-10-19.

CVSS v3 metric

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

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM Mq Advanced Container Images — versions 10.0.0.5-r1, 9.3.0.0-r1, 9.3.0.0-r2
IBM Mq Operator — versions 3.4.1, 3.5.0, 3.8.0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

www.ibm.com/support/pages/node/7292667 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-12669?: CVE-2026-12669 is a low-severity vulnerability in IBM Mq Advanced Container Images, classified under Out-of-bounds Read. CVSS score: 3.1/10. Published 2026-10-19.
How severe is CVE-2026-12669?: Low severity. CVSS v3 base score is 3.1 out of 10.