CVE-2026-47876

CRITICAL

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.

CVSS v3.1 Score

9.3
CRITICAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 7/30/2026Modified: 7/30/2026

Related Intelligence (1)

CRITICALApt

Broadcom patches vulnerabilities all over VMware

Broadcom has addresses five vulnerabilities in its VMware product range, three of which have been accorded a “critical” rating. The affected products are: VMware ESX, VMware vCenter, VMware Workstation, VMware Fusion, VMware Cloud Foundation, VMware vSphere Foundation, VMware Telco Cloud Platform, and VMware Telco Cloud Infrastructure CVE-206-59309 affects the VMware Directory Service. According t

CVE-2026-47876CVE-2026-59310
CSO Online

References (1)

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017