CVE-2023-33372

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

Connected IO v2.1.0 and prior uses a hard-coded username/password pair embedded in their device's firmware used for device communication using MQTT. An attacker who gained access to these credentials is able to connect to the MQTT broker and send messages on behalf of devices, impersonating them. in order to sign and verify JWT session tokens, allowing attackers to sign arbitrary session tokens and bypass authentication.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-798

Affected software

No affected versions have been published.

Timeline

Published: Aug 4, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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