CVE-2026-47876 CRITICAL

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

Vendor Vmware
Product Cloud Foundation
Weakness CWE-787
Published July 30, 2026
Last update July 30, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 30, 2026 CVE published
July 30, 2026 Record updated