Critical severity · published Sep 18, 2026
CVE-2026-10747
IBM MQ Appliance is affected by a heap buffer overflow vulnerability in protocol message processing
10.0
CVSS
0.9%
EPSS
No
On KEV
Description
IBM MQ Appliance could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer overflow in protocol message processing before authentication.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
MQ Appliance · IBM
9.4 LTS through 9.4.0.0 to 9.4.0.25; 9.4 CD through 9.4.1.0 to 9.4.5.2; 10.0.0.0 through 10.0.0.1 only · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-10747
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-10747
www.ibm.com
https://www.ibm.com/support/pages/node/7284690
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