Advisory Details

April 28th, 2026

Oracle VirtualBox SoundBlaster 16 Race Condition Local Privilege Escalation Vulnerability

CVE ID	CVE-2026-35230
CVSS SCORE	7.5, AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS	Oracle
AFFECTED PRODUCTS	VirtualBox
VULNERABILITY DETAILS	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 specific flaw exists within the SoundBlaster 16 virtual device. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor.
ADDITIONAL DETAILS	Oracle has issued an update to correct this vulnerability. More details can be found at: https://www.oracle.com/security-alerts/cpuapr2026.html
DISCLOSURE TIMELINE	2026-03-25 - Vulnerability reported to vendor 2026-04-28 - Coordinated public release of advisory 2026-04-28 - Advisory Updated
CREDIT	VMBreakers(SANGBIN KIM, GANGMIN KIM, Un3xploitable)

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