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CVE-2026-18142IBM MQ is affected by a denial of service vulnerability

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 a remote authenticated attacker to cause a denial of service and perform limited memory corruption due to an integer overflow.

Timeline

  1. ID reserved

    By ibm

  2. · 3 months later

    Published

  3. · 5 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-2026-18142, by who scored it
Scored byCVSSScoreVector
ibmCNA (assigner)3.1High7.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
NVDNVD · Analyzed3.1High7.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
EPSS (exploitation in 30 days)
0.44% · top 61% of all CVEs (14 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.

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 DT500561. 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

References1

Sources

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

Badge for a README or a ticket

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Record last updated .