CVE-2026-36590

HIGH
Published Jul 15, 2026 Modified Jul 16, 2026 CWE-400 CWE-772

Description

An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via the nni_qos_db_set function in broker_tcp.c component

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0040
Probability of exploitation
0.32%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption
CWE-772 CWE-772

Affected Products

Vendor Product
emqx nanomq

References

Frequently Asked Questions

What is CVE-2026-36590? +
An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via the nni_qos_db_set function in broker_tcp.c component It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-36590? +
CVE-2026-36590 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0040, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-36590? +
CVE-2026-36590 affects products from emqx, specifically: nanomq. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-36590? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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