CVE-2026-47876criticalCWE-787

CVE-2026-47876: critical vulnerability in VMware ESX

VMXNET3 out-of-bounds write vulnerability

Published

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28Vexday Risk Score

No sign of exploitation. It has an official Brazilian government alert.

ssvc Trackcvss 9.3epss 0.2%
Official alert in Brazil

Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.

Source: CTIR Gov (GSI) and CISC Gov.br, under the CC BY-ND 3.0 license.
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:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
VMware · Cloud FoundationVMware · ESXVMware · Telco Cloud PlatformVMware · vSphere Foundation
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