CVE-2025-41238CWE-787

PVSCSI heap-overflow vulnerability

Critical · published July 15, 2025

CVSS v3.1
9.3
EPSS
0%
Percentile
39.0
In the wild
Unconfirmed
What it is

🚨 A heap overflow vulnerability in VMware's PVSCSI controller could let a local admin execute code right on your host! 🔥 Think of this like a sneaky intruder slipping through a crack in the wall of a secure data center — they’ve got admin access and can now tinker with the sensitive machinery inside, potentially causing chaos. This could lead to unauthorized code execution on the machine running VMware Workstation or Fusion, giving attackers the keys to the kingdom! If you're using ESXi, the risk is slightly contained, but still, it’s like leaving the back door unlocked while thinking the front is secure — definitely not a good idea!

Put simply

Think of this like a sneaky intruder slipping through a crack in the wall of a secure data center — they’ve got admin access and can now tinker with the sensitive machinery inside, potentially causing chaos. The vulnerability arises from a heap overflow issue in the PVSCSI controller, allowing an attacker with local administrative privileges to write out of bounds, impacting the VMX process on the host if exploited.

What to do

This could lead to unauthorized code execution on the machine running VMware Workstation or Fusion, giving attackers the keys to the kingdom! If you're using ESXi, the risk is slightly contained, but still, it’s like leaving the back door unlocked while thinking the front is secure — definitely not a good idea! To safeguard your environment, patch your VMware installations immediately! Ensure you upgrade to the latest versions of ESXi, Workstation, and Fusion that address this vulnerability. Regularly audit your virtual machine privileges and configurations to prevent unauthorized access. You've got this! Stay vigilant and keep your systems updated for a secure virtual environment! 🛡️

The record
Technical detail
CVSS v3.1
9.3 · CRITICAL
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00461 · 39.0th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2025-07-15T18:34Z
EPSS history
Timeline
  • 15 JUL 18:34Z
    PVSCSI heap-overflow vulnerability
    cvelistv5