What is CVE-2025-56352?

CVE-2025-56352 is a high-severity vulnerability in N/a, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-18.

How severe is CVE-2025-56352?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in N/a

CVE-2025-56352

In tinyMQTT commit 6226ade15bd4f97be2d196352e64dd10937c1962 (2024-02-18), the broker mishandles protocol violations during CONNECT packet parsing. When receiving a CONNECT packet with a zero-length Client ID while CleanSession is set to 0…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.001 (21.0th 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

N/a — versions n/a

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

cve@mitre.org
134c704f-9b21-4f2e-91b3-4a467353bcc0

Frequently asked questions

What is CVE-2025-56352?: CVE-2025-56352 is a high-severity vulnerability in N/a, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-18.
How severe is CVE-2025-56352?: High severity. CVSS v3 base score is 7.5 out of 10.