---
cve: "CVE-2025-4947"
severity: "MEDIUM"
cvss: 6.5
epss: "27%"
vendor: "curl"
kev: false
exploited: false
published: "2025-05-28 07:15:24"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T19:44:41+02:00"
---

# CVE-2025-4947

> 6.5 MEDIUM

## Beschreibung

libcurl accidentally skips the certificate verification for QUIC connections when connecting to a host specified as an IP address in the URL. Therefore, it does not detect impostors or man-in-the-middle attacks.

## CVSS-Vektor

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

| 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 | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 4dacb79fcdd9364c1083e06f6a011d797a344f47 (Commit)

## Referenzen

- <https://curl.se/docs/CVE-2025-4947.json>
- <https://curl.se/docs/CVE-2025-4947.html>
- <https://hackerone.com/reports/3150884>
- <http://www.openwall.com/lists/oss-security/2025/05/28/4>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-4947) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_