CVE-2023-34494: Emqx Nanomq

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

NanoMQ 0.16.5 is vulnerable to heap-use-after-free in the nano_ctx_send function of nmq_mqtt.c.

Affected products

• Emqx Nanomq: version 0.16.5 only

Published 2023-06-12. Last modified 2026-06-17.