# CVE-2026-47876: VMXNET3 out-of-bounds write vulnerability

> CVE-2026-47876: VMXNET3 out-of-bounds write vulnerability. CVSS 9.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-47876
Last updated: 2026-07-30T14:16:58Z

- Published: 2026-07-30 12:31 UTC · Updated: 2026-07-30 14:16 UTC · Assigner: vmware
- CVSS: 9.3 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS: 0.19%, 9th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-787

## Description

VMware ESX contains an out-of-bounds write vulnerability in the VMXNET3 virtual network adapter. A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the host. Non VMXNET3 virtual adapters are not affected by this issue.

## Affected vendors and products

- VMware: Cloud Foundation
- VMware: ESX
- VMware: Telco Cloud Platform
- VMware: vSphere Foundation

## Tracked companies

- [Google Cloud](https://rewindex.com/company/google-cloud.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-47876)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-47876)
- [https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017](https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017)

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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-2026-47876 · Markdown: https://rewindex.com/cve/CVE-2026-47876.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-47876 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T01:58:45.927Z