CVE-2021-28166

Published: Apr 7, 2021Modified: Jun 17, 2026

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

Source: NVD

Description

In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.

Affected (1)

Products: Eclipse: Mosquitto

Eclipse

1 product

Mosquitto

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Eclipse Mosquitto	From 2.0.0 to 2.0.9

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (2)

https://bugs.eclipse.org/bugs/show_bug.cgi?id=572608

Source: emo@eclipse.org

Issue TrackingPatchVendor Advisory

https://bugs.eclipse.org/bugs/show_bug.cgi?id=572608

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPatchVendor Advisory

Timeline

No history available yet.