---
cve: "CVE-2021-20998"
severity: "CRITICAL"
cvss: 10.0
epss: "1.1%"
vendor: "WAGO"
kev: false
exploited: false
published: "2021-05-13 14:15:18"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T05:37:32+02:00"
---

# CVE-2021-20998

> 10.0 CRITICAL

## Beschreibung

In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://cert.vde.com/en-us/advisories/vde-2021-013>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-20998) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_