CVE-2023-34048

9.8 CRITICAL CISA KEV - Actively Exploited

Published: October 25, 2023 Modified: October 30, 2025

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://www.vmware.com/security/advisories/VMSA-2023-0023.html

Source: security@vmware.com

Vendor Advisory

https://www.vicarius.io/vsociety/posts/understanding-cve-2023-34048-a-zero-day-out-of-bound-write-in-vcenter-server

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit Third Party Advisory

https://www.vmware.com/security/advisories/VMSA-2023-0023.html

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-34048

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

4 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

93.2%

100th percentile

Exploitation Status

Actively Exploited

Remediation due: 2024-02-12

Weaknesses (CWE)

CWE-787 CWE-787

Affected Vendors

vmware

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