CVE-2026-47876 — CRITICAL (9.3)

Vulnerability 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.

CVSS Score

9.3

CRITICAL

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

Related Weaknesses (CWE)

CWE-787

References

https://support.broadcom.com/web/ecx/support-content-notification/-/external/con

FAQ

What is CVE-2026-47876?

CVE-2026-47876 is a vulnerability with a CVSS score of 9.3 (CRITICAL). 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 networ...

How severe is CVE-2026-47876?

CVE-2026-47876 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-47876?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.