CVE-2021-28166
MEDIUM6.5EPSS 0.58%Published: 4/7/2021Modified: 4/28/2026
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 packages (2)
- Alpine/mosquittofrom 0, < 2.0.10-r0
- Debian/mosquittofrom 0, < 2.0.10-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |