VULNERABILITY INTELLIGENCE

CVE-2021-41039

CVSS score7.5 HIGH
EPSS probability1.35%
CISA KEVNot currently listed
Published2021-12-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • emo@eclipse.org: CWE-1050
  • nvd@nist.gov: NVD-CWE-Other

Primary references