CVE-2025-59946

Name: CVE-2025-59946
Creator: NVD / NIST
Published: 2025-12-27T01:15:41.88+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2025-59946 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. NanoMQ MQTT Broker (NanoMQ) is an Edge Messaging Platform. Prior to version 0.24.2, there is a classical data racing issue about sub info list which could result in heap use after free crash. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

NanoMQ MQTT Broker (NanoMQ) is an Edge Messaging Platform. Prior to version 0.24.2, there is a classical data racing issue about sub info list which could result in heap use after free crash. This issue has been patched in version 0.24.2.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.32%

24.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Emqx	Nanomq	< 0.24.4

References

https://github.com/nanomq/nanomq/issues/1863Exploit, Issue Tracking
https://github.com/nanomq/nanomq/security/advisories/GHSA-xg37-23w7-72p5Vendor Advisory

Timeline

Published: Dec 27, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-59946?

How severe is CVE-2025-59946?

CVE-2025-59946 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2025-59946?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-59946?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST