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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (53.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.connectedio.com/products/routers (Product)
- claroty.com/team82/disclosure-dashboard/cve-2023-33372 (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.