CVE-2026-11375

HIGH CVSS 3.1: 8.8 EPSS 0.35%
Updated Sep 23, 2026
IBM
Parameter Value
CVSS 8.8 (HIGH)
Affected Versions 9.1.0.0 — 9.4.5.1
Type CWE-122 (Heap-based Buffer Overflow)
Vendor IBM
Public PoC No

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a stack buffer overflow when processing XA transaction identifiers.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 7

Configuration From (including) Up to (excluding)
Ibm Mq
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
9.1.0.0 <= 9.1.0.37
Ibm Mq
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
9.2.0.0 <= 9.2.0.43
Ibm Mq
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
9.3.0.0 <= 9.3.0.41
Ibm Mq
cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:*
9.3.0.0 <= 9.3.5.1
Ibm Mq
cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
9.4.0.0 <= 9.4.0.25
Ibm Mq
cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:*
9.4.0.0 <= 9.4.5.1
Ibm Mq
cpe:2.3:a:ibm:mq:10.0.0.0:*:*:*:continuous_delivery:*:*:*
— —