CVE-2026-47876VMXNET3 out-of-bounds write vulnerability
Updated under an hour ago ()
Does this affect you?
It affects VMware Cloud Foundation and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 9.3 CRITICAL (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- vmware
- NVD analysis
- Awaiting Analysis
- Record last updated
- Jul 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
VMware Cloud Foundation vmware:cloud_foundation (from the name) | 9.1.x.x; 9.0.x.x; 5.x | CNA record |
VMware vSphere Foundation vmware:vsphere_foundation (from the name) | 9.1.x.x; 9.0.x.x | CNA record |
VMware ESX vmware:esx (from the name) | from 9.1.x.x before ESXi-9.1.0.0200-25557999; from 9.0.x.x before ESXi-9.0.2.0100-25595025; from 8.0 before ESXi80U3k-25595708 | CNA record |
VMware Telco Cloud Platform vmware:telco_cloud_platform (from the name) | 5.1.x; 5.0.x | CNA record |
References
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.