CVE-2021-44080: Sercomm h500s Firmware

High severity, CVSS 7.2. EPSS: 24.9% chance of exploitation in the next 30 days.

A Command Injection vulnerability in httpd web server (setup.cgi) in SerComm h500s, FW: lowi-h500s-v3.4.22 allows logged in administrators to arbitrary OS commands as root in the device via the connection_type parameter of the statussupport_diagnostic_tracing.json endpoint.

Affected products

• Sercomm h500s Firmware: version lowi-h500s-v3.4.22 only

Published 2022-06-02. Last modified 2026-06-17.