---
cve: "CVE-2023-34048"
severity: "CRITICAL"
cvss: 9.8
epss: "99.4%"
vendor: "VMware"
kev: true
exploited: true
published: "2023-10-25 18:17:27"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T09:13:55+02:00"
---

# CVE-2023-34048

> 9.8 CRITICAL · ⚠️ CISA KEV (960 Tage) · 🔓 Exploited

## Beschreibung

vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.

## CVSS-Vektor

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

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

## Referenzen

- <https://www.vmware.com/security/advisories/VMSA-2023-0023.html>
- <https://www.vicarius.io/vsociety/posts/understanding-cve-2023-34048-a-zero-day-out-of-bound-write-in-vcenter-server>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-34048>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-34048) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_