---
cve: "CVE-2025-0520"
severity: "CRITICAL"
cvss: 9.4
epss: "2.6%"
vendor: "ShowDoc"
kev: false
exploited: false
published: "2025-04-29 19:35:37"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-08T12:05:11+02:00"
---

# CVE-2025-0520

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

An unrestricted file upload vulnerability in ShowDoc caused by improper validation of file extension allows execution of arbitrary PHP, leading to remote code execution.This issue affects ShowDoc: before 2.8.7.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- d7b0bca689b34b3a5e4c3aa1a62e1352bda120ac (Commit)

## Referenzen

- <https://github.com/vulhub/vulhub/tree/master/showdoc/CNVD-2020-26585>
- <https://github.com/star7th/showdoc/pull/1059>
- <https://www.cnvd.org.cn/flaw/show/CNVD-2020-26585>
- <https://www.vulncheck.com/advisories/showdoc-unauthenticated-file-upload-rce>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2025-0520/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_