CVE-2026-11376
IBM MQ is affected by a denial of service vulnerability
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to an integer overflow when processing subscription requests with crafted buffer size values.
| CWE | CWE-190 |
| Vendor | ibm |
| Product | mq |
| Published | Nov 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
IBM / MQ
9.2.0.0 ≤ 9.2.0.44 9.3.0.0 ≤ 9.3.0.42 9.4.0.0 ≤ 9.4.0.26 9.4.0.0 ≤ 9.4.5.1 10.0.0.0 ≤ 10.0.0.5