---
cve: "CVE-2018-20250"
severity: "HIGH"
cvss: 7.8
epss: "96.3%"
vendor: "Check Point Software Technologies Ltd."
kev: true
exploited: true
published: "2019-02-05 20:29:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-27T22:24:29+02:00"
---

# CVE-2018-20250

> 7.8 HIGH · ⚠️ CISA KEV (1685 Tage) · 🔓 Exploited · 🧪 PoC

## Beschreibung

In WinRAR versions prior to and including 5.61, There is path traversal vulnerability when crafting the filename field of the ACE format (in UNACEV2.dll). When the filename field is manipulated with specific patterns, the destination (extraction) folder is ignored, thus treating the filename as an absolute path.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA KEV seit: **15.02.2022**
- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **active**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

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

## Exploit-Evidenz

- [EDB-46756 — RARLAB WinRAR 5.61 - ACE Format Input Validation Remote Code Execution (Metasploit)](https://www.exploit-db.com/exploits/46756) ✅
- [EDB-46552 — WinRAR 5.61 - Path Traversal](https://www.exploit-db.com/exploits/46552) ✅

## Referenzen

- <https://github.com/blau72/CVE-2018-20250-WinRAR-ACE>
- <https://research.checkpoint.com/extracting-code-execution-from-winrar/>
- <https://www.exploit-db.com/exploits/46552/>
- <http://www.securityfocus.com/bid/106948>
- <https://www.win-rar.com/whatsnew.html>
- <http://packetstormsecurity.com/files/152618/RARLAB-WinRAR-ACE-Format-Input-Validation-Remote-Code-Execution.html>
- <http://www.rapid7.com/db/modules/exploit/windows/fileformat/winrar_ace>
- <https://www.exploit-db.com/exploits/46756/>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20250>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2018-20250) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_