CVE-2026-47275

Nanomq has a NULL pointer dereference in nni_mqttv5_msg_decode_connect() (mqtt_codec.c:1863) for versions ≤ 0.24.11. The code iterates CONNECT properties using prop instead of will_prop; when a packet has no connect-level properties but has will properties, dereferencing prop->next can SIGSEGV...

CVE-2026-47275: NULL Pointer Dereference

In nanomq versions 0.24.11 and earlier, a NULL pointer dereference in nnimqttv5msgdecodeconnect allows a malicious MQTT broker to crash any connecting NanoMQ MQTTv5 client including bridge mode with a single packet, causing remote denial of service via SIGSEGV. In nnimqttv5msgdecodeconnect...

CVE-2025-65953: Use After Free

NanoMQ MQTT Broker NanoMQ is an all-around Edge Messaging Platform. Prior to version 0.22.5, a Heap-Use-After-Free UAF vulnerability exists in the TCP transport component of NanoMQ, which relies on the underlying NanoNNG library specifically in src/sp/transport/mqtt/brokertcp.c. The vulnerability...