CVE-2023-33377: Connectedio Connected Io

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

Connected IO v2.1.0 and prior has an OS command injection vulnerability in the set firewall command in part of its communication protocol, enabling attackers to execute arbitrary OS commands on devices.

Affected products

• Connectedio Connected Io: up to and including 2.1.0

Published 2023-08-04. Last modified 2026-06-17.