---
cve: "CVE-2025-23019"
severity: "MEDIUM"
cvss: 5.4
epss: "1%"
vendor: "IETF"
kev: false
exploited: false
published: "2025-01-14 20:15:32"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T22:24:05+02:00"
---

# CVE-2025-23019

> 5.4 MEDIUM

## Beschreibung

IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.

## CVSS-Vektor

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

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

## Referenzen

- <https://datatracker.ietf.org/doc/html/rfc4213>
- <https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf>
- <https://www.top10vpn.com/research/tunneling-protocol-vulnerability/>
- <https://www.kb.cert.org/vuls/id/199397>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-23019) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_