by Kastro
Paper/Archive/CVE-2026-47876

CVE-2026-47876

VMware Cloud Foundation — VMXNET3 out-of-bounds write vulnerability

EPSS 0.2%CVSS 9.3
critical.is priorityof 100
30
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 8.9.089 × 201.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Cloud Foundation9.1.x.x–CNA
Cloud Foundation9.0.x.x–CNA
Cloud Foundation5.x–CNA
vSphere Foundation9.1.x.x–CNA
vSphere Foundation9.0.x.x–CNA
ESX9.1.x.x – < ESXi-9.1.0.0200-25557999ESXi-9.1.0.0200-25557999CNA
ESX9.0.x.x – < ESXi-9.0.2.0100-25595025ESXi-9.0.2.0100-25595025CNA
ESX8.0 – < ESXi80U3k-25595708ESXi80U3k-25595708CNA
Telco Cloud Platform5.1.x–CNA
Telco Cloud Platform5.0.x–CNA

Scores by source

vmware (CNA)9.3CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

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