CVE-2024-42651

moderate-risk

Published 2025-07-29

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.

Do I need to act?

0.15% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (1)

Nanomq

Affected Vendors

Emqx

References (3)

Product https://github.com/nanomq/nanomq

Exploit https://github.com/nanomq/nanomq/issues/1217

Exploit https://github.com/songxpu/bug_report/blob/master/MQTT/NanoMQ/CVE-2024-42651.md

/ 100

moderate-risk

Severity 26/34 · High

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal