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Mq Operator CVE-2024-40680

MEDIUM
Memory Allocation with Excessive Size Value (CWE-789)
2024-09-07 psirt@us.ibm.com
5.5
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Memory allocation limits
Impact

CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required.

Exploit ScenarioDerived

Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

IBM MQ 9.3 CD and 9.4 LTS/CD could allow a local user to cause a denial of service due to improper memory allocation causing a segmentation fault. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-789. IBM MQ 9.3 CD and 9.4 LTS/CD could allow a local user to cause a denial of service due to improper memory allocation causing a segmentation fault. Affected products include: Ibm Mq Operator.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionNVD

IBM MQ 9.3 CD and 9.4 LTS/CD could allow a local user to cause a denial of service due to improper memory allocation causing a segmentation fault.

Threat Intelligence Overview

EPSS Score
0.2%
Top 91% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:a:ibm:mq_operator:2.0.26:*:*:*:-:*:*:*
cpe:2.3:a:ibm:mq_operator:3.2.4:*:*:*:-:*:*:*
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CVE-2024-39742 CRITICAL
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IBM MQ Operator 3.2.2 and IBM MQ Operator 2.0.24 could allow a user to bypass authentication under certain configuration

CVE-2026-10572 HIGH
8.8 Oct 19

Heap buffer overflow in IBM MQ Operator and IBM MQ Advanced Container Images lets an authenticated user with authority t

CVE-2026-10574 HIGH
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Denial of service and potential remote code execution in IBM MQ deployments using the MQ Operator and MQ Advanced Contai

CVE-2026-12148 HIGH
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Unrestricted Java deserialization in the MQ Classes for Java shipped with IBM MQ Operator (versions 2.0.0 through 4.0.4)

CVE-2026-10743 HIGH
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Authenticated users of containerized IBM MQ deployments can cause denial of service or memory corruption by sending MQOP

CVE-2024-40681 HIGH
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IBM MQ Operator 3.2.2 and IBM MQ Operator 2.0.24 IBM MQ Container Developer Edition is vulnerable to denial of service c

CVE-2024-27255 HIGH
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6.5 Oct 19

Authenticated denial of service in IBM MQ container deployments - specifically the MQ Operator and MQ Advanced container

CVE-2026-12350 MEDIUM
6.5 Oct 19

Denial of service in IBM MQ Operator and MQ Advanced Container Images allows an authenticated MQ client to crash the que

CVE-2026-11829 MEDIUM
6.5 Oct 19

Denial of service in IBM MQ Operator and IBM MQ Advanced container images lets an authenticated MQ client crash the queu

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