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Mq Operator CVE-2025-27365

MEDIUM
Use After Free (CWE-416)
2025-05-01 psirt@us.ibm.com
6.5
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. EPSS exploitation probability: 0.21%.

Exploit ScenarioDerived

A remote attacker could access freed memory to execute arbitrary code or crash the application by sending crafted requests to the affected application.

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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AnalysisAIv1 – Mar 28, 2026

IBM MQ Operator LTS 2.0.0 through 2.0.29, MQ Operator CD 3.0.0, 3.0.1, 3.1.0 through 3.1.3, 3.3.0, 3.4.0, 3.4.1, 3.5.0, 3.5.1, and MQ Operator SC2 3.2.0 through 3.2.10 Client connecting to a MQ Queue. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

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 as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. IBM MQ Operator LTS 2.0.0 through 2.0.29, MQ Operator CD 3.0.0, 3.0.1, 3.1.0 through 3.1.3, 3.3.0, 3.4.0, 3.4.1, 3.5.0, 3.5.1, and MQ Operator SC2 3.2.0 through 3.2.10 Client connecting to a MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel process terminating it. Affected products include: Ibm Mq Operator, Ibm Supplied Mq Advanced Container Images. Version information: through 2.0.29.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.5 MEDIUM
AV:N/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
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionCVE.org

IBM MQ Operator LTS 2.0.0 through 2.0.29, MQ Operator CD 3.0.0, 3.0.1, 3.1.0 through 3.1.3, 3.3.0, 3.4.0, 3.4.1, 3.5.0, 3.5.1, and MQ Operator SC2 3.2.0 through 3.2.10

Client connecting to a MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel process terminating it.

Executive ViewAI

Why It Matters

CVE-2025-27365 presents notable security risk, a use-after-free vulnerability rated CVSS 6.5. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Moderate
Compensating Controls

Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.

Threat Intelligence Overview

EPSS Score
0.2%
Top 57% exploitable
Data Quality
3 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

Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:a:ibm:mq_operator:*:*:*:*:lts:*:*:*
cpe:2.3:a:ibm:mq_operator:*:*:*:*:-:*:*:*
cpe:2.3:a:ibm:mq_operator:*:*:*:*:-:*:*:*
cpe:2.3:a:ibm:mq_operator:*:*:*:*:-:*:*:*
cpe:2.3:a:ibm:mq_operator:*:*:*:*:cd:*:*:*
cpe:2.3:a:ibm:mq_operator:*:*:*:*:sc2:*:*:*
cpe:2.3:a:ibm:mq_operator:3.0.0:*:*:*:cd:*:*:*
cpe:2.3:a:ibm:mq_operator:3.0.1:*:*:*:cd:*:*:*
cpe:2.3:a:ibm:mq_operator:3.3.0:*:*:*:cd:*:*:*
cpe:2.3:a:ibm:mq_operator:3.4.0:*:*:*:cd:*:*:*
cpe:2.3:a:ibm:mq_operator:3.4.1:*:*:*:cd:*:*:*
cpe:2.3:a:ibm:mq_operator:3.5.0:*:*:*:cd:*:*:*
cpe:2.3:a:ibm:mq_operator:3.5.1:*:*:*:cd:*:*:*
cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.2.0.1:r1-eus:*:*:-:*:*:*
cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.2.0.1:r1-eus:*:*:lts:*:*:*
cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.2.0.2:r1-eus:*:*:-:*:*:*
cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.2.0.2:r1-eus:*:*:lts:*:*:*
cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.2.0.2:r2-eus:*:*:-:*:*:*
cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.2.0.2:r2-eus:*:*:lts:*:*:*
cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.2.0.4:r1-eus:*:*:-:*:*:*
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