ZDI-26-639: Oracle VirtualBox VMSVGA Heap-based Buffer Overflow Local Privilege Escalation Vulnerability
Published Sep 9, 2026
·Updated
This vulnerability allows local attackers to escalate privileges on affected installations of Oracle VirtualBox. 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-2026-71116.
Affected Software
1 affected component
Oracle VirtualBox
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 level of 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 relevant to environments where a guest has been compromised or where high-privilege guest execution can be obtained.
2
What is the likely security impact after exploitation?
Successful exploitation allows a local attacker to escalate privileges on an affected Oracle VirtualBox installation. The advisory assigns CVSS 7.5 to CVE-2026-71116.