CVE-2026-47876
VMXNET3 out-of-bounds write vulnerability
CVSS Score
9.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | vmware |
| Product | cloud foundation |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jul 30, 2026 |
| Last Updated | Jul 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
VMware / Cloud Foundation
9.1.x.x 9.0.x.x 5.x
VMware / vSphere Foundation
9.1.x.x 9.0.x.x
VMware / ESX
9.1.x.x < ESXi-9.1.0.0200-25557999 9.0.x.x < ESXi-9.0.2.0100-25595025 8.0 < ESXi80U3k-25595708
VMware / Telco Cloud Platform
5.1.x 5.0.x