Unrestricted file upload vulnerability in OpenGnsys affecting version 1.1.1d (Espeto). This vulnerability allows an attacker to send a POST request to the endpoint '/opengnsys/images/M_Icons.php' modifying the file extension, due to lack of file extension verification, resulting in a webshell injection.
Conclusion & alert: CVE-2024-3705 is rated Moderate Risk (63.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.21%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-05-29 | 0.89% | 1.21% | +0.32% |
| 2 | 2026-05-01 | 0.68% | 0.89% | +0.21% |
| 3 | 2025-11-21 | — | 0.68% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| URL | Tags |
|---|---|
| https://opengnsys.es/web/parche-de-seguridad-cve-2024-370x | Vendor Advisory |
| https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-opengnsys | Third Party Advisory |