Out-of-bounds Read in Emqx Nanomq

CVE-2024-42646

A segmentation fault in NanoMQ v0.21.10 allows attackers to cause a Denial of Service (DoS) via crafted messages.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (32.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Emqx Nanomq — versions 0.21.10
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2024-42646?: CVE-2024-42646 is a high-severity vulnerability in Emqx Nanomq, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2025-07-14.
How severe is CVE-2024-42646?: High severity. CVSS v3 base score is 7.5 out of 10.