CVE-2020-13849

HIGH

MQTT 3.1.1 - Denial of Service via Keep-Alive Timeout Manipulation

Title source: llm
STIX 2.1

Description

The MQTT protocol 3.1.1 requires a server to set a timeout value of 1.5 times the Keep-Alive value specified by a client, which allows remote attackers to cause a denial of service (loss of the ability to establish new connections), as demonstrated by SlowITe.

References (2)

Core 2
Core References
Technical Description, Third Party Advisory x_refsource_misc
https://www.mdpi.com/1424-8220/20/10/2932
Technical Description, Third Party Advisory x_refsource_misc
https://doi.org/10.3390/s20102932

Scores

CVSS v3 7.5
EPSS 0.0200
EPSS Percentile 78.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (1)
mqtt/mqtt 3.1.1
Published Jun 04, 2020
Tracked Since Feb 18, 2026