CVE-2021-47816: Thecus n4800eco NAS Server Control Panel

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

Thecus N4800Eco NAS Server Control Panel contains a command injection vulnerability that allows authenticated attackers to execute arbitrary system commands through user management endpoints. Attackers can inject commands via username and batch user creation parameters to execute shell commands with administrative privileges.

Affected products

• Thecus Thecus n4800eco NAS Server Control Panel: version N4800Eco only

Published 2026-01-16. Last modified 2026-06-17.