---
cve: "CVE-2025-6430"
severity: "MEDIUM"
cvss: 6.1
epss: "0.3%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2025-06-24 13:15:23"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-02T06:31:46+02:00"
---

# CVE-2025-6430

> 6.1 MEDIUM

## Beschreibung

When a file download is specified via the `Content-Disposition` header, that directive would be ignored if the file was included via a `<embed>` or `<object>` tag, potentially making a website vulnerable to a cross-site scripting attack. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## BSI-Hinweise (deutsch)

- [Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2025-1850)
- [Mozilla Firefox: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2025-1395)

## Referenzen

- <https://bugzilla.mozilla.org/show_bug.cgi?id=1971140>
- <https://www.mozilla.org/security/advisories/mfsa2025-51/>
- <https://www.mozilla.org/security/advisories/mfsa2025-53/>
- <https://www.mozilla.org/security/advisories/mfsa2025-54/>
- <https://www.mozilla.org/security/advisories/mfsa2025-55/>
- <https://lists.debian.org/debian-lts-announce/2025/06/msg00029.html>
- <https://lists.debian.org/debian-lts-announce/2025/07/msg00002.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-6430) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_