TOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a command injection vulnerability via the pin parameter in the setWiFiWpsConfig function.
Conclusion & alert: CVE-2025-51390 is rated High Exploit Risk (89.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 5.47%, 90th percentile). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.26% over the last day, indicating growing attacker interest. 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 | 2026-05-31 | 2.21% | 5.47% | +3.26% |
| 2 | 2026-05-21 | 2.43% | 2.21% | -0.22% |
| 3 | 2026-04-30 | — | 2.43% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| totolink | n600r_firmware | 4.3.0cu.7647_b20210106 | cpe:2.3:o:totolink:n600r_firmware:4.3.0cu.7647_b20210106:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://totolink.com | Broken Link |
| https://github.com/Luanruy/qianxin/blob/main/CVE-2025-51390.md | Exploit Third Party Advisory |
| https://github.com/Luanruy/qianxin/blob/main/overflow-0x41ca08.md | Exploit Third Party Advisory |