emqx NanoMQ 0.15.0-0 mqtt_code.c read_byte heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in emqx NanoMQ 0.15.0-0. Affected by this vulnerability is the function read_byte of the file mqtt_code.c. This manipulation causes heap-based overflow. The identification of this vulnerability is CVE-2023-29994. There is no exploit available.

Detailsinfo

A vulnerability has been found in emqx NanoMQ 0.15.0-0 and classified as critical. Affected by this vulnerability is the function read_byte of the file mqtt_code.c. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In NanoMQ v0.15.0-0, Heap overflow occurs in read_byte function of mqtt_code.c.

The weakness was shared 05/04/2023 as 1042. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-29994 since 04/07/2023. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-33524). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

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Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/07/2023 🔍
05/04/2023 +27 days 🔍
05/04/2023 +0 days 🔍
12/17/2025 +957 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1042
Status: Confirmed

CVE: CVE-2023-29994 (🔍)
GCVE (CVE): GCVE-0-2023-29994
GCVE (VulDB): GCVE-100-228019
EUVD: 🔍

Entryinfo

Created: 05/04/2023 21:14
Updated: 12/17/2025 00:03
Changes: 05/04/2023 21:14 (40), 05/27/2023 16:31 (11), 01/30/2025 08:33 (26), 12/17/2025 00:03 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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