CVE-2026-87284 in VM VirtualBox
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is 7.2.16. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle VM VirtualBox. CVSS 3.1 Base Score 3.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the core component of Oracle VM VirtualBox, specifically affecting version 7.2.16 and potentially other supported releases depending on the specific code path exploited. This flaw represents a significant security concern because it allows for an easily exploitable condition that leads to a partial denial of service against the virtualization platform itself. The nature of this vulnerability is classified under availability impacts, as indicated by its CVSS 3.1 base score of 3.2, which categorizes it as low severity in terms of overall risk but highlights critical operational implications for systems relying on uninterrupted virtual machine execution.
From a technical perspective, the exploitation vector requires high privileges and local access to the infrastructure where Oracle VM VirtualBox is executing. This means that an attacker must already have authenticated logon capabilities with elevated permissions on the host system running the hypervisor. Once such access is established, the attacker can trigger conditions within the core virtualization engine that cause instability or resource exhaustion, leading to a partial denial of service. Unlike remote code execution vulnerabilities which compromise confidentiality and integrity, this flaw primarily disrupts availability by causing the VirtualBox application or specific guest instances to become unresponsive or crash partially.
The operational impact extends beyond the immediate failure of the Oracle VM VirtualBox software due to scope change characteristics inherent in virtualization architectures. Because hypervisors manage multiple isolated environments, a compromise or disruption within the core component can significantly impact additional products and services running on those virtual machines. This cascading effect means that while the direct target is the host application, the collateral damage may include downtime for critical business applications hosted within guest operating systems, leading to broader organizational disruptions despite the low CVSS score assigned to the vulnerability itself.
In terms of industry standard classifications, this vulnerability aligns with CWE-400, which describes uncontrolled resource consumption leading to denial of service conditions. Furthermore, from a tactical standpoint related to MITRE ATT&CK frameworks, such an event would likely be categorized under Impact techniques that focus on disrupting availability rather than data exfiltration or lateral movement for command and control purposes. The requirement for high privileged access places this within the context of local privilege escalation scenarios where an attacker leverages existing administrative rights to degrade system reliability rather than gaining new privileges they did not already possess.
Mitigation strategies should prioritize immediate patching to version 7.2.16 or later if a fixed release is available, as Oracle typically addresses such core stability issues in subsequent updates. For environments where immediate patching is not feasible due to operational constraints, implementing strict access controls is essential. Since the vulnerability requires high privileged logon access, ensuring that administrative accounts are heavily secured with multi-factor authentication and limited usage can reduce the attack surface significantly. Additionally, monitoring for unusual resource consumption patterns or unexpected crashes within the VirtualBox process on host systems can aid in early detection of exploitation attempts before significant service disruption occurs.