The Thecus NAS server N8800 with firmware 5.03.01 allows remote attackers to execute arbitrary commands via a get_userid action with shell metacharacters in the username parameter.
Conclusion & alert: CVE-2013-5667 is rated High Exploit Risk (85.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.96%). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-01-10 | 2.50% | 2.96% | +0.45% |
| 2 | 2025-11-09 | 2.21% | 2.50% | +0.30% |
| 3 | 2025-09-24 | — | 2.21% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| thecus | n8800_nas_server_firmware | 5.03.01 | cpe:2.3:o:thecus:n8800_nas_server_firmware:5.03.01:*:*:*:*:*:*:* |
| thecus | n8800_nas_server | — | cpe:2.3:h:thecus:n8800_nas_server:-:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.7elements.co.uk/news/cve-2013-5667/ | Exploit |
| http://www.7elements.co.uk/resources/blog/multiple-vulnerabilities-thecus-nas/ | Exploit |
| http://www.kb.cert.org/vuls/id/105686 | US Government Resource |