Data Race Vulnerability in NanoMQ MQTT Broker by NanoMQ
CVE-2025-59946

7.5HIGH

Key Information:

Vendor

NanoMQ

Status
NanoMQ
Vendor
CVE Published:
27 December 2025

What is CVE-2025-59946?

The NanoMQ MQTT Broker, an Edge Messaging Platform, is susceptible to a classical data racing issue affecting the sub info list. This vulnerability can lead to a heap use after free crash, causing instability and potential denial of service. Users are advised to upgrade to version 0.24.2 or later, where this issue has been addressed and patched.

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Deploy the Patch

Affected Version(s)

nanomq < 0.24.4

References

https://github.com/nanomq/nanomq/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/nanomq/nanomq/issues/1863
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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