ZDI-26-189: (Pwn2Own) VMware ESXi VMXNET3 Integer Overflow Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of VMware ESXi. 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 8.2. The following CVEs are assigned: CVE-2025-41236.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-26-189?
The severity of ZDI-26-189 is considered high due to its potential for local privilege escalation.
How do I fix ZDI-26-189?
To fix ZDI-26-189, apply the latest security patches provided by VMware for ESXi.
What type of vulnerability is ZDI-26-189?
ZDI-26-189 is an integer overflow vulnerability that leads to local privilege escalation on VMware ESXi.
Who is affected by ZDI-26-189?
All installations of VMware ESXi that are not patched against this vulnerability are affected.
What is the exploit type of ZDI-26-189?
The exploit type of ZDI-26-189 involves local privilege escalation, requiring an attacker to execute high-privileged code.