---
cve: "CVE-2025-3512"
severity: "MEDIUM"
cvss: 4.8
epss: "0.2%"
vendor: "Qt"
kev: false
exploited: false
published: "2025-04-11 08:15:15"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T03:53:30+02:00"
---

# CVE-2025-3512

> 4.8 MEDIUM

## Beschreibung

There is a Heap-based Buffer Overflow vulnerability in QTextMarkdownImporter. This requires an incorrectly formatted markdown file to be passed to QTextMarkdownImporter to trigger the overflow.

This issue affects Qt from 6.8.0 to 6.8.4. Versions up to 6.6.0 are known to be unaffected, and the fix is in 6.8.4 and later.

## CISA-Anreicherung (vulnrichment/ADP)

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

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Clear
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## BSI-Hinweise (deutsch)

- [QT: Schwachstelle ermöglicht Denial of Service](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2025-0789)

## Referenzen

- <https://codereview.qt-project.org/c/qt/qtbase/+/635546>
- <http://www.openwall.com/lists/oss-security/2025/04/24/4>
- <http://www.openwall.com/lists/oss-security/2025/04/24/5>
- <http://www.openwall.com/lists/oss-security/2025/04/24/6>
- <http://www.openwall.com/lists/oss-security/2025/04/25/1>
- <http://www.openwall.com/lists/oss-security/2025/04/25/2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-3512) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_