---
cve: "CVE-2026-103678"
severity: "MEDIUM"
cvss: 5.4
epss: ""
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-10-01 12:17:15"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-03T07:09:56+02:00"
---

# CVE-2026-103678

> 5.4 MEDIUM · 🧪 PoC

## Beschreibung

A flaw was found in tnef. An attacker can exploit this vulnerability by providing a specially crafted file containing uncompressed Rich Text Format (RTF) data. Because the application fails to properly validate input buffer boundaries before copying data in get_rtf_data_from_buf(), reading beyond the allocated memory occurs. This flaw can cause the application to crash, leading to a Denial of Service (DoS), or leak sensitive memory contents into extracted output files.

## CNA-Record (Kanon, cvelistV5)

- CNA: **fedora**
- State: PUBLISHED
- Stand: 2026-10-01 15:00:19
- CNA-CVSS: **5.4** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L`)

## 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:U/C:L/I:N/A:L
```

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

## Referenzen

- <https://access.redhat.com/security/cve/CVE-2026-103678>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2544476>
- <https://github.com/verdammelt/tnef>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-103678) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_