---
cve: "CVE-2020-21474"
severity: "CRITICAL"
cvss: 9.8
epss: "1.2%"
vendor: "n/a"
kev: false
exploited: false
published: "2023-06-20 15:15:11"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T21:24:13+02:00"
---

# CVE-2020-21474

> 9.8 CRITICAL · 🧪 PoC

## Beschreibung

File Upload vulnerability in NucleusCMS v.3.71 allows a remote attacker to execute arbitrary code via the /nucleus/plugins/skinfiles/?dir=rsd parameter.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://github.com/NucleusCMS/NucleusCMS/issues/95>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-21474) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_