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Vulnerability · Published Sep 15, 2026 · Assigned by ibm

CVE-2026-12351IBM MQ is vulnerable to unauthenticated remote code execution via JNDI injection

Critical 9.8

In plain English

A critical-severity injection 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 0.9% (higher than 59% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.9%top 41.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

IBM MQ 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 LTS, and 10.0.0.0 could allow a remote attacker to execute arbitrary code due to unsafe JNDI lookup processing when the IVT application is deployed.

Affected products (as reported)

VendorProductVersions
IBM MQ 9.3.0.0 – 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 LTS10.0.0.0

Weakness: CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References