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

> CVE-2023-34048: VMware vCenter Server Out-of-Bounds Write Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2023-34048
Last updated: 2025-10-21T23:05:33Z

- Published: 2023-10-25 04:21 UTC · Updated: 2025-10-21 23:05 UTC · Assigner: vmware
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 99.2%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2024-01-22, federal due date 2024-02-12, ransomware use: Unknown

## 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.

## CISA required action

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

## Affected vendors and products

- vmware: cloud\_foundation
- vmware: vcenter\_server
- VMware: VMware Cloud Foundation (VMware vCenter Server)
- VMware: VMware vCenter Server

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-34048)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2023-34048)
- [https://www.vmware.com/security/advisories/VMSA-2023-0023.html](https://www.vmware.com/security/advisories/VMSA-2023-0023.html)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2023-34048 · Markdown: https://rewindex.com/cve/CVE-2023-34048.md · JSON: https://rewindex.com/api/v1/cves/CVE-2023-34048 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:58.422Z