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01 Record

CVE-2026-12343

IBM MQ Denial of Service

MediumPUBLISHEDCNA: ibm
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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02 Description

IBM MQ Denial of Service

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.24% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 14.9% of scored records. A rank, not a probability.
NVD base score
6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-23.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-19 16:40Z9 DAYS AGO
Last updated
2026-10-19 17:52Z9 DAYS AGO
Reserved
2026-06-15
Assigning CNA
ibm
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-400Uncontrolled Resource ConsumptionClass
Data version
5.2
Document digest
744aef6911caa85d5cbbf48657949b481f9b38fb98f0dcc99e09835b9ddbd136

05 Affected products

VendorProductVersionsPlatforms
IBMMQ Operator3.2.0 to 3.2.29, 3.3.0 to < 3.4.0, 3.4.1, 3.5.0, 3.5.1 to 3.5.3, 3.6.0 to 3.6.4, 3.7.0 to 3.7.2, 3.8.0, 3.8.1, 3.9.0, 3.9.1, 3.9.2, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 2.0.0 to 2.0.29—
IBMMQ Advanced container images9.4.0.6-r1 to r1, 9.4.0.6-r2, 9.4.0.7-r1, 9.4.0.10-r1, 9.4.0.10-r2, 9.4.0.11-r1, 9.4.0.11-r2, 9.4.0.11-r3, 9.4.0.12-r1, 9.4.0.15-r1 - 9.4.0.15-r4, 9.4.0.16-r1, 9.4.0.16-r2, 9.4.0.17-r1, 9.4.0.17-r2, 9.4.0.20-r1, 9.4.0.21-r1, 9.4.0.21-r2, 9.4.0.25-r1 - 9.4.0.25-r3, 9.4.0.26-r1CD: 9.4.1.0-r1, 9.4.1.0-r2, 9.4.1.1-r1, 9.4.2.0-r1, 9.4.2.0-r2, 9.4.2.1-r1, 9.4.2.1-r2, 9.4.3.0-r1, 9.4.3.0-r2, 9.4.3.1-r1 - 9.4.3.1-r3, 9.4.4.0-r1 - 9.4.4.0-r4, 9.4.4.1-r1, 9.4.5.0-r1, 9.4.5.0-r2, 9.4.5.1-r1, 10.0.0.0-r1 - 10.0.0.0-r4, 10.0.0.5-r1LTS: 9.3.0.0-r1, 9.3.0.0-r2, 9.3.0.0-r3, 9.3.0.1-r1, 9.3.0.1-r2, 9.3.0.1-r3, 9.3.0.1-r4, 9.3.0.3-r1, 9.3.0.4-r1, 9.3.0.4-r2, 9.3.0.5-r1, 9.3.0.5-r2, 9.3.0.5-r3, 9.3.0.6-r1, 9.3.0.10-r1, 9.3.0.10-r2, 9.3.0.11-r1,9.3.0.11-r2, 9.3.0.15-r1, 9.3.0.16-r1, 9.3.0.16-r2, 9.3.0.17-r1, 9.3.0.17-r2, 9.3.0.17-r3, 9.3.0.20-r1, 9.3.0.20-r2, 9.3.0.21-r1, 9.3.0.21-r2, 9.3.0.21-r3, 9.3.0.25-r1, 9.4.0.0-r1, 9.4.0.0-r2, 9.4.0.0-r3, 9.4.0.5-r1, 9.4.0.5-r2, 9.4.0.6-r2, 9.4.0.7-r1, 9.4.0.10-r1, 9.4.0.10-r2, 9.4.0.11-r1, 9.4.0.11-r2, 9.4.0.11-r3, 9.4.0.12-r1, 9.4.0.15-r1 to 9.4.0.15-r4, 9.4.0.16-r1, 9.4.0.16-r2, 9.4.0.17-r1, 9.4.0.17-r2, 9.4.0.20-r1, 9.4.0.21-r1, 9.4.0.21-r2, 9.4.0.25-r1 to 9.4.0.25-r3, 9.4.0.26-r1, 9.4.1.0-r1, 9.4.1.0-r2, 9.4.1.1-r1, 9.4.2.0-r1, 9.4.2.0-r2, 9.4.2.1-r1, 9.4.2.1-r2, 9.4.3.0-r1, 9.4.3.0-r2, 9.4.3.1-r1 to 9.4.3.1-r3, 9.4.4.0-r1, 9.4.4.1-r1, 9.4.5.0-r1, 9.4.5.0-r2, 9.4.5.1-r1, 10.0.0.0-r1 to 10.0.0.0-r4, 10.0.0.5-r1, 9.3.0.0-r1, 9.3.0.0-r2, 9.3.0.0-r3, 9.3.0.1-r1, 9.3.0.1-r2, 9.3.0.1-r3, 9.3.0.1-r4, 9.3.0.3-r1, 9.3.0.4-r1, 9.3.0.4-r2, 9.3.0.5-r1, 9.3.0.5-r2, 9.3.0.5-r3, 9.3.0.6-r1, 9.3.0.10-r1, 9.3.0.10-r2, 9.3.0.11-r1, 9.3.0.11-r2, 9.3.0.15-r1, 9.3.0.16-r1, 9.3.0.16-r2, 9.3.0.17-r1, 9.3.0.17-r2, 9.3.0.17-r3, 9.3.0.20-r1, 9.3.0.20-r2, 9.3.0.21-r1, 9.3.0.21-r2, 9.3.0.21-r3, 9.3.0.25-r1, 9.4.0.0-r1, 9.4.0.0-r2, 9.4.0.0-r3, 9.4.0.5-r1, 9.4.0.5-r2—

06 References

07 Remediation

Issues mentioned by this security bulletin are addressed in - * IBM MQ Operator v4.1.0 https://www.ibm.com/docs/en/ibm-mq/10.0.x CD release that included IBM supplied MQ Advanced 10.0.1.0-r1 https://www.ibm.com/docs/en/ibm-mq/10.0.x container image. * IBM MQ Operator v4.0.5 https://www.ibm.com/docs/en/ibm-mq/10.0.x SC2 release that included IBM supplied MQ Advanced 10.0.0.5-r2 https://www.ibm.com/docs/en/ibm-mq/10.0.x container image. * IBM MQ Operator v3.2.30 https://www.ibm.com/docs/en/ibm-mq/9.4.x SC2 release that included IBM supplied MQ Advanced 9.4.0.26-r2 https://www.ibm.com/docs/en/ibm-mq/9.4.x container image. * IBM MQ Container 10.0.1.0-r1 https://www.ibm.com/docs/en/ibm-mq/10.0.x and 10.0.0.5-r2 https://www.ibm.com/docs/en/ibm-mq/10.0.x release. IBM strongly recommends applying the latest container images. IBM MQ Operator v4.1.0 CD release details: Image Fix Version Registry Image Location ibm-mq-operator v4.1.0 icr.io icr.io/cpopen/ibm-mq-operator@sha256:ed9a217869637c8749270fd485517ea62c8dffbd198a8f7090042ebbeb5bd127 ibm-mqadvanced-server 10.0.1.0-r1 cp.icr.io cp.icr.io/cp/ibm-mqadvanced-server@sha256:06f0892b36e879d0f8957477deeabfe2b4e0fda13f64792edbe7825caf7b77e3 ibm-mqadvanced-server-dev 10.0.1.0-r1 icr.io icr.io/ibm-messaging/ibm-mqadvanced-server-dev@sha256:129d1d736e94bae071039136585734b7ccc6cfd6e1cc7dacb9af59e60d0a57c2 IBM MQ Operator v4.0.5 SC2 release details: Image Fix Version Registry Image Location ibm-mq-operator v4.0.5