CVE-2023-34048

CRITICAL9.8

VMware vCenter Server Out-of-Bounds Write Vulnerability

Published Oct 25, 2023

Modified 5 months ago

Details

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.

References

WEB

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

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2023-34048

WEB

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

WEB

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

CVSS Analysis

CVSS v3.1

9.8

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

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

Ecosystems

Timeline

PublishedOct 25, 2023

ModifiedOct 21, 2025