CVE-2024-31040 - Vulnerability Details - OpenCVE

Description

Buffer Overflow vulnerability in the get_var_integer function in mqtt_parser.c in NanoMQ 0.21.7 allows remote attackers to cause a denial of service via a series of specially crafted hexstreams.

Published: 2024-04-17

Score: 2.7 Low

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:emqx:nanomq:0.21.7:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00328.

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/nanomq/nanomq/issues/1720

History

Thu, 26 Feb 2026 12:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 10 Jun 2025 02:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Emqx Emqx nanomq
CPEs		cpe:2.3:a:emqx:nanomq:0.21.7:::::::*
Vendors & Products		Emqx Emqx nanomq

Subscriptions

Emqx Nanomq

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-04-17T00:00:00.000Z

Updated: 2024-08-02T01:46:04.462Z

Reserved: 2024-03-27T00:00:00.000Z

Link: CVE-2024-31040

Vulnrichment

Updated: 2024-08-02T01:46:04.462Z

NVD

Status : Analyzed

Published: 2024-04-17T19:15:07.680

Modified: 2025-06-10T01:38:19.090

Link: CVE-2024-31040

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-120

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