CVE-2025-59947: NanoMQ is a messaging broker/bus for IoT Edge & SDV. Versions prior to 0.24.4 have a buffer overflow case while the…
CVE-2025-59947 · Severity: critical · CVSS 9 · Published 2025-12-15
NanoMQ is a messaging broker/bus for IoT Edge & SDV. Versions prior to 0.24.4 have a buffer overflow case while the PUBLISH packets trigger both shared subscription and vanila subscription. This is fixed in version 0.24.4. As a workaround, disable shared subscription.
No. Junglewise Threat Intelligence has no report of CVE-2025-59947 being exploited in the wild.
How severe is CVE-2025-59947?
Critical severity, with a CVSS score of 9, published 15 December 2025.
Which products and versions are affected?
EMQX Nanomq. The advisory does not name versions.
Is there a fix for CVE-2025-59947?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-59947?
Check whether you run EMQX Nanomq. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.