CVE-2025-41236 CRITICAL

CVE-2025-41236: VMXNET3 integer-overflow vulnerability

Vendor Vmware
Product ESXi
Weakness CWE-787
Published July 15, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

VMware ESXi, Workstation, and Fusion contain an integer-overflow 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.

Key dates

02Disclosure timeline

July 15, 2025 CVE published
February 26, 2026 Record updated