CVE-2024-42651: Emqx Nanomq

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

NanoMQ v0.17.9 was discovered to contain a heap use-after-free vulnerability via the component sub_Ctx_handle. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted SUBSCRIBE message.

Affected products

• Emqx Nanomq: version 0.17.9 only

Published 2025-07-29. Last modified 2026-06-17.