ZDI-26-647: VMware Workstation VMXNET3 TSO Segmentation Integer Overflow Local Privilege Escalation Vulnerability
Published Sep 9, 2026
·Updated
This vulnerability allows local attackers to escalate privileges on affected installations of VMware Workstation. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.5. The following CVEs are assigned: CVE-2026-59346.
Affected Software
1 affected component
VMware VMware Workstation
Event History
Sep 9, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What access does an attacker need before exploiting this issue?
The attacker must already be able to execute high-privileged code on the target guest system. The issue is therefore not described as exploitable by an unauthenticated remote attacker.
2
Where does the privilege escalation occur?
The vulnerability affects VMware Workstation and allows a local attacker to escalate privileges. The required initial code execution is on the guest system.
3
Which CVE tracks this vulnerability?
This issue is assigned CVE-2026-59346.