CVE-2024-42646

HIGH

Published Jul 14, 2025 Modified Jul 16, 2025 CWE-125

Description

A segmentation fault in NanoMQ v0.21.10 allows attackers to cause a Denial of Service (DoS) via crafted messages.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
emqx	nanomq	All

References

Exploits

https://github.com/songxpu/bug_report/blob/master/MQTT/NanoMQ/CVE-2024-42646.md

Other References

https://github.com/nanomq/nanomq

Frequently Asked Questions

What is CVE-2024-42646? +

A segmentation fault in NanoMQ v0.21.10 allows attackers to cause a Denial of Service (DoS) via crafted messages. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-42646? +

CVE-2024-42646 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-42646? +

CVE-2024-42646 affects products from emqx, specifically: nanomq. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-42646? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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