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

Description (CNA)

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 (CNA)

Vendor / product	Versions
VMware / Cloud Foundation	affected 9.1.x.x; affected 9.0.x.x; affected 5.x
VMware / vSphere Foundation	affected 9.1.x.x; affected 9.0.x.x
VMware / ESX	affected 9.1.x.x before ESXi-9.1.0.0200-25557999; affected 9.0.x.x before ESXi-9.0.2.0100-25595025; affected 8.0 before ESXi80U3k-25595708
VMware / Telco Cloud Platform	affected 5.1.x; affected 5.0.x

CWE

CWE-787

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.