RCE in Thecus N4800eco Nas Server Control Panel
CVE-2021-47816
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.018 · change: +0.001
Affected products
- Thecus N4800eco Nas Server Control Panel — versions N4800Eco
Weakness classification (CWE)
References
- ExploitDB-49926 (exploit)
- Thecus Official Vendor Homepage (product)
- Thecus N4800Eco Product Page (product)
- Researcher Blog (technical-description, exploit)
- VulnCheck Advisory: Thecus N4800Eco Nas Server Control Panel - Command Injection (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47816?
- CVE-2021-47816 is a high-severity vulnerability in Thecus N4800eco Nas Server Control Panel, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-01-16.
- How severe is CVE-2021-47816?
- High severity. CVSS v3 base score is 8.8 out of 10.