---
cve: "CVE-2025-67896"
severity: "HIGH"
cvss: 7.0
epss: "0.5%"
vendor: "exim"
kev: false
exploited: false
published: "2025-12-14 04:00:24"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T05:13:34+02:00"
---

# CVE-2025-67896

> 7.0 HIGH

## Beschreibung

Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- d46a6727798fc48d1756190a6d46d19216348c25 (Commit)

## Referenzen

- <https://www.openwall.com/lists/oss-security/2025/12/11/2>
- <https://exim.org/static/doc/security/>
- <https://exim.org/static/doc/security/EXIM-Security-2025-12-09.1/report.txt>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-67896) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_