CVE-2026-47876

published 2026-07-30

CVE-2026-47876: VMware ESX contains an out-of-bounds write vulnerability in the VMXNET3 virtual network adapter. A malicious actor with local administrative privileges on a…

Priority P3 52 critical 9.3 CVSS 3.1

AV L AC L PR N UI N S C C H I H A H

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

10 ranges

Vendor	Product	Version range	Fixed in
vmware	cloud_foundation	—	—
vmware	cloud_foundation	—	—
vmware	cloud_foundation	—	—
vmware	esx	>= 8.0 < ESXi80U3k-25595708	ESXi80U3k-25595708
vmware	esx	>= 9.0.x.x < ESXi-9.0.2.0100-25595025	ESXi-9.0.2.0100-25595025
vmware	esx	>= 9.1.x.x < ESXi-9.1.0.0200-25557999	ESXi-9.1.0.0200-25557999
vmware	telco_cloud_platform	—	—
vmware	telco_cloud_platform	—	—
vmware	vsphere_foundation	—	—
vmware	vsphere_foundation	—	—

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CWE-787