--- title: "CVE-2026-11729: IBM MQ - Insecure Deserialization" description: "IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 contain an insecure deserialization vulnerability caused by unsafe deserialization enabling JNDI injection, letting authenticated attackers execute arbitrary code in client applications, exploit requires authentication." url: https://panop.io/threat-heartbeat/CVE-2026-11729/ --- # CVE-2026-11729 IBM MQ - Insecure Deserialization IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 contain an insecure deserialization vulnerability caused by unsafe deserialization enabling JNDI injection, letting authenticated attackers execute arbitrary code in client applications, exploit requires authentication. CVSS base score 8.5 /10 High CISA KEV Not listed Public exploit None known Authentication Required EPSS 0.31% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-11729) ## Details Type Insecure Deserialization Impact Remote Code Execution CVSS vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Published 15 September 2026 Updated 15 October 2026 Weakness [CWE-502](https://cwe.mitre.org/data/definitions/502.html) ## Vendor fix Update to the latest available version beyond 10.0.0.0. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-11729](https://nvd.nist.gov/vuln/detail/CVE-2026-11729) - [https://www.ibm.com/support/pages/node/7284941](https://www.ibm.com/support/pages/node/7284941) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)