CVE-2026-12155

mediumpriority · track · 26EPSS 0.003 · 18 %ileUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.26% (18th) EPSS

CVSS 6.5 · medium

Is it mine?

67 products

Check your exposure

Who says so?

1 sources

nvd

EPSS · scored 2026-10-27

IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.

cvss

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

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · psirt@us.ibm.com USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USCWE-502US

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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