CVE-2026-12665

criticalpriority · track · 39EPSS 0.003 · 24 %ileUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.32% (24th) EPSS

CVSS 9.8 · critical

Is it mine?

67 products

Check your exposure

Who says so?

1 sources

nvd

EPSS · scored 2026-10-27

IBM MQ could allow a remote attacker to execute arbitrary code due to a stack buffer overflow when processing TLS certificates with malformed distinguished names during channel connection establishment.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.1–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · psirt@us.ibm.com USexploitability 2.2 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-121USCWE-121US

affected products (67)

Products and version ranges known to be affected.

ibm mq operator2.0.0 → 2.0.29nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator3.2.0 → 3.2.29nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.3.0nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.4.0nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.4.1nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.5.0nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.5.1nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.5.2nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.5.3nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.6.0nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.6.1nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.6.2nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.6.3nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.6.4nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.7.0nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.7.1nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.7.2nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.8.0nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.8.1nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*
ibm mq operator= 3.9.0nvdUScpe:2.3:a:ibm:mq_operator:*:*:*:*:*:*:*:*

showing 20 of 67

sources

Which sources assert this record, and when.

nvd NVD CVE.org MITRE

published 2026-10-19modified 2026-10-23

references (1) nvd

External citations — patches, advisories, analysis.

https://www.ibm.com/support/pages/node/7292667Vendor Advisory

scry

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