CVE-2025-41237 CRITICAL

CVE-2025-41237: VMCI integer-underflow vulnerability

Vendor Vmware
Product Cloud Foundation
Weakness CWE-787
Published July 15, 2025
Last update February 26, 2026

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-underflow in VMCI (Virtual Machine Communication Interface) that leads to an out-of-bounds write. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host. On ESXi, the exploitation is contained within the VMX sandbox whereas, on Workstation and Fusion, this may lead to code execution on the machine where Workstation or Fusion is installed.

Key dates

02Disclosure timeline

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