CVE-2023-34048 CRITICAL

CVE-2023-34048: VMware vCenter Server Out-of-Bounds Write Vulnerability

Vendor Vmware
Product VMware vCenter Server
KEV Status Known Exploited
Published October 25, 2023
Last update October 21, 2025
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

CISA mandated remediation

02CISA Required Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Key dates

03Disclosure timeline

October 25, 2023 CVE published
October 21, 2025 Record updated