Out-of-Bounds Write Vulnerability in VMware ESX VMXNET3 Network Adapter

CVE-2026-47876

What is CVE-2026-47876?

VMware ESX is vulnerable due to an out-of-bounds write issue related to the VMXNET3 virtual network adapter. If an attacker gains local administrative privileges on a virtual machine utilizing this adapter, they may exploit the vulnerability to execute arbitrary code on the host system. Importantly, virtual machines using non-VMXNET3 network adapters are not impacted by this vulnerability, highlighting the need for system administrators to ensure secure configurations and monitoring.

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