CVE-2026-11375 | BDVDB-2026-376599 Detail

IBMMQ

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-122 Heap-based Buffer Overflow

References#

https://www.ibm.com/support/pages/node/7284948

Exploit#

No public exploit known

History#

Version 12026-09-18Record published in the CVE List.
Version 22026-09-21Most recent update recorded in the CVE List.

Published

Published: 2026-09-18
Last modified: 2026-09-21

Vendor information

Vendor: IBM
Product: MQ

All IBM vulnerabilities

Score

8.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 49.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 9.1.0.0 and <= 9.1.0.37 LTS
Fixed
Not stated
Vulnerable
>= 9.2.0.0 and <= 9.2.0.43 LTS
Fixed
Not stated
Vulnerable
>= 9.3.0.0 and <= 9.3.0.41 LTS
Fixed
Not stated
Vulnerable
>= 9.3.0.0 and <= 9.3.5.1 CD
Fixed
Not stated
Vulnerable
>= 9.4.0.0 and <= 9.4.0.25 LTS
Fixed
Not stated
Vulnerable
>= 9.4.0.0 and <= 9.4.5.1 CD
Fixed
Not stated
Vulnerable
10.0.0.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.8 High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).