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Vulnerability · Published Sep 14, 2026 · Assigned by ibm

CVE-2026-13293IBM MQ Java messaging is vulnerable to remote code execution

High 8.8

In plain English

A high-severity unsafe deserialization in MQ from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.8%top 43.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 could allow a remote authenticated attacker to execute arbitrary code on the system due to the deserialization of untrusted data.

Affected products (as reported)

VendorProductVersions
IBM MQ 9.1.0.0 – through 9.1.0.37 LTS9.2.0.0 – through 9.2.0.43 LTS9.3.0.0 – through 9.3.0.41 LTS9.3.0.0 – through 9.3.5.1 CD9.4.0.0 – through 9.4.0.25 LTS9.4.0.0 – through 9.4.5.1 CD10.0.0.0

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References