CVE-2026-13293Network attack vector

Authenticated code execution via untrusted Java deserialization

Published Sep 14, 2026 · Updated Sep 14, 2026

Deserialization in IBM MQ Java messaging allows remote authenticated users to execute arbitrary code through crafted serialized data. The Java messaging path deserializes attacker-controlled data without an effective trust boundary, but IBM has not identified the responsible class or method. An authenticated messaging connection is required; affected releases include the specified 9.1, 9.2, 9.3, and 9.4 LTS and CD ranges and 10.0.0.0.

CVSS severityUnavailable
Unscored
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in IBM MQ Java messaging allows remote authenticated users to execute arbitrary code through crafted serialized data. The Java messaging path deserializes attacker-controlled data without an effective trust boundary, but IBM has not identified the responsible class or method. An authenticated messaging connection is required; affected releases include the specified 9.1, 9.2, 9.3, and 9.4 LTS and CD ranges and 10.0.0.0.

The record

CVE
CVE-2026-13293
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
IBM
Product
IBM MQ
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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 privilegesauthenticated

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.

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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
Privilegesauthenticated
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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