CVE-2021-3149: Netshieldcorp Nano 25 Firmware

High severity, CVSS 7.2. EPSS: 4.5% chance of exploitation in the next 30 days.

On Netshield NANO 25 10.2.18 devices, /usr/local/webmin/System/manual_ping.cgi allows OS command injection (after authentication by the attacker) because the system C library function is used unsafely.

Affected products

• Netshieldcorp Nano 25 Firmware: version 10.2.18 only

Published 2021-02-22. Last modified 2026-06-17.