Is CVE-2023-33372 actively exploited?

No active exploitation of CVE-2023-33372 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-33372 be exploited remotely?

Yes. CVE-2023-33372 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-33372?

CVE-2023-33372 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-33372

CWE-798Published: August 4, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2023-33372 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.