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CVE-2026-12356

IBM MQ Managed File Transfer is affected by an arbitrary code execution vulnerability

High7.5EPSS 0.34%
Published
Updated
Reserved
Assigned by
ibm

Description

IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated user with command queue access to execute arbitrary code by injecting malicious arguments into Ant script commands.

Timeline

  1. ID reserved

    By ibm

  2. · 5 months later

    Published

  3. · 2 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-12356, by who scored it
Scored byCVSSScoreVector
ibmCNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Undergoing Analysis3.1High7.5CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.34% · top 72% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • IBM · MQ

    • affected 9.2.0.0 – ≤ 9.2.0.44
    • affected 9.3.0.0 – ≤ 9.3.0.42
    • affected 9.4.0.0 – ≤ 9.4.0.26
    • affected 9.4.0.0 – ≤ 9.4.5.1
    • affected 10.0.0.0 – ≤ 10.0.0.5

What to do

Solution: This issue was addressed under Known Issue DT473747. IBM MQ version 9.2 LTS Apply cumulative security update 9.2.0.46 https://www.ibm.com/support/pages/downloading-ibm-mq-92-lts IBM MQ version 9.3 LTS Apply cumulative security update 9.3.0.43 https://www.ibm.com/support/pages/downloading-ibm-mq-93-lts IBM MQ version 9.4 LTS Apply fix pack 9.4.0.30 https://www.ibm.com/support/pages/downloading-ibm-mq-94 IBM MQ version 10.0.LTS Upgrade to IBM MQ version 10.0.0.6 https://www.ibm.com/support/pages/downloading-ibm-mq-100 IBM MQ version 9.4 CD and 10.0 CD Upgrade to IBM MQ version 10.0.1.0 https://www.ibm.com/support/pages/downloading-ibm-mq-100

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .