What is CVE-2023-33372?

CVE-2023-33372 is a critical-severity vulnerability in Connectedio Connected Io, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2023-08-04.

How severe is CVE-2023-33372?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Connectedio Connected Io

CVE-2023-33372

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.

EPSS: 0.008 (51.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Connectedio Connected_io
N/a — versions n/a

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2023-33372?: CVE-2023-33372 is a critical-severity vulnerability in Connectedio Connected Io, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2023-08-04.
How severe is CVE-2023-33372?: Critical severity. CVSS v3 base score is 9.8 out of 10.