NULL pointer dereference in Nanomq

CVE-2026-47275

In nanomq versions 0.24.11 and earlier, a NULL pointer dereference in `nni_mqttv5_msg_decode_connect()` allows a malicious MQTT broker to crash any connecting NanoMQ MQTTv5 client (including bridge mode) with a single packet, causing remot…

CVSS v3 metric

CVSS v3 base score 2.6 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L.

Affected products

  • Nanomq — versions <= 0.24.11

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-47275?
CVE-2026-47275 is a low-severity vulnerability in Nanomq, classified under NULL Pointer Dereference. CVSS score: 2.6/10. Published 2026-07-20.
How severe is CVE-2026-47275?
Low severity. CVSS v3 base score is 2.6 out of 10.