Critical severity · published Sep 15, 2026
CVE-2026-12351
IBM MQ is vulnerable to unauthenticated remote code execution via JNDI injection
9.8
CVSS
0.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MQ
MQ · IBM
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; 10.0.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12351
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12351
www.ibm.com
https://www.ibm.com/support/pages/node/7284541
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