---
cve: "CVE-2025-66834"
severity: "HIGH"
cvss: 7.3
epss: "0.3%"
vendor: "n/a"
kev: false
exploited: false
published: "2025-12-30 00:00:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T06:21:26+02:00"
---

# CVE-2025-66834

> 7.3 HIGH · 🧪 PoC

## Beschreibung

A CSV Formula Injection vulnerability in TrueConf Server v5.5.2.10813 allows a normal user to inject malicious spreadsheet formulas into exported chat logs via crafted Display Name.

## CVSS-Vektor

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

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

## Referenzen

- <https://trueconf.com>
- <https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-66834) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_