cvedb.io
CVE-2026-21888
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-03-11T16:16:23.930 · Last modified 2026-06-17T10:19:05.750

Summary

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. MQTT v5 Variable Byte Integer parsing out-of-bounds: get_var_integer() accepts 5-byte varints without bounds checks; reliably triggers OOB read / crash when built with ASan. This affects 0.24.6 and earlier.

Affected products

emqx — nanomq

Does this affect you?

Add your gear to cvedb and we'll alert you only when emqx ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.