Excessive CPU Usage and Denial of Service Vulnerability in Eclipse Mosquitto MQTT v5 Client

CVE-2021-41039 · HIGH Severity

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

In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 client connecting with a large number of user-property properties could cause excessive CPU usage, leading to a loss of performance and possible denial of service.

Learn more about our User Device Pen Test.