CVE-2026-10743 | BDVDB-2026-391339 Detail

IBMMQ Operator

Description#

IBM MQ could allow an authenticated attacker to cause a denial of service or corrupt memory due to improper validation of buffer sizes in MQOPEN operations.

Impact#

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

Weaknesses#

CWE-1223 Race Condition for Write-Once Attributes

References#

https://www.ibm.com/support/pages/node/7292667

Exploit#

No public exploit known

History#

Version 12026-10-19Record published in the CVE List.
Version 22026-10-20Most recent update recorded in the CVE List.

Published

Published: 2026-10-19
Last modified: 2026-10-20

Vendor information

Vendor: IBM
Product: MQ Operator

All IBM vulnerabilities

Score

8.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 21.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

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

Affected Systems

Vulnerable
>= 3.2.0 and <= 3.2.29
Fixed
Not stated
Vulnerable
>= 3.3.0 and < 3.4.0
Fixed
3.4.0
Vulnerable
3.4.1
Fixed
Not stated
Vulnerable
3.5.0
Fixed
Not stated
Vulnerable
>= 3.5.1 and <= 3.5.3
Fixed
Not stated
Vulnerable
>= 3.6.0 and <= 3.6.4
Fixed
Not stated
Vulnerable
>= 3.7.0 and <= 3.7.2
Fixed
Not stated
Vulnerable
3.8.0
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).