CVE-2026-47876: VMXNET3 out-of-bounds write vulnerability
Critical · CVSS 9.3 (CVSS 3.1)EPSS 0.19%, 9th percentilePublished Updated Assigner: vmware
Description
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.
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · CWE-787
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
VMware: Cloud FoundationVMware: ESXVMware: Telco Cloud PlatformVMware: vSphere Foundation
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvis… (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)