CVE-2026-12355Network attack vector

Unauthenticated code execution via IVT JNDI injection

Published Sep 15, 2026 · Updated Sep 15, 2026

JNDI injection in the Resource Adapter IVT servlet in IBM MQ allows remote attackers to execute code via crafted servlet input. The servlet passes insufficiently validated request data into a JNDI lookup, allowing an attacker-controlled naming reference to resolve external content. Exploitation requires the wmq.jmsra.ivt.ear test application to be deployed and network-reachable; successful attacks disclose data or execute code in the application-server context.

CVSS severityUnavailable
Unscored
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

JNDI injection in the Resource Adapter IVT servlet in IBM MQ allows remote attackers to execute code via crafted servlet input. The servlet passes insufficiently validated request data into a JNDI lookup, allowing an attacker-controlled naming reference to resolve external content. Exploitation requires the wmq.jmsra.ivt.ear test application to be deployed and network-reachable; successful attacks disclose data or execute code in the application-server context.

The record

CVE
CVE-2026-12355
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
IBM
Product
IBM MQ
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.0.0
  2. Affected versionversion=9.1.0.0 <=9.1.0.37 LTS
  3. Affected versionversion=9.2.0.0 <=9.2.0.43 LTS
  4. Affected versionversion=9.3.0.0 <=9.3.0.41 LTS
  5. Affected versionversion=9.3.0.0 <=9.3.5.1 CD
  6. Affected versionversion=9.4.0.0 <=9.4.0.25 LTS
  7. Affected versionversion=9.4.0.0 <=9.4.5.1 CD

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM MQversion=10.0.0.0; version=9.1.0.0 <=9.1.0.37 LTS; version=9.2.0.0 <=9.2.0.43 LTS; version=9.3.0.0 <=9.3.0.41 LTS; version=9.3.0.0 <=9.3.5.1 CD; version=9.4.0.0 <=9.4.0.25 LTS; version=9.4.0.0 <=9.4.5.1 CD

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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