CVE-2026-21986
HighSummary
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. An unauthenticated attacker with local access can cause a hang or frequently repeatable crash (complete DoS) of VirtualBox. This vulnerability applies to Windows VMs only.
Risk Assessment
A DoS attack can disrupt critical virtual machines, leading to downtime and loss of service availability. The attack may also impact other products (scope change).
Recommendation
Apply the latest security patches from Oracle for VirtualBox. Restrict local access to systems running VirtualBox to trusted users only.
Other vulnerabilities in Oracle VM VirtualBox
See all- CVE-2026-21990High
A vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. It is easily exploitable by a high privileged attacker with logon to the infrastructure where VirtualBox executes. Successful attacks can result in takeover of VirtualBox, and may significantly impact additional products (scope change). CVSS 3.1 Base Score is 8.2.
- CVE-2026-21989High
A vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. It is easily exploitable by a high privileged attacker with logon to the infrastructure where VirtualBox executes. Successful attacks can result in unauthorized creation, deletion or modification of data, unauthorized access to data, and partial denial of service. CVSS 3.1 Base Score is 8.1.
- CVE-2026-21988High
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. A high-privileged attacker with local access can take over VirtualBox, and the attack may impact other products (scope change).
- CVE-2026-21987High
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. A high-privileged attacker with local access can take over VirtualBox, and the attack may impact other products (scope change).
- CVE-2026-21984High
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. A high-privileged attacker with local access can take over VirtualBox, but exploitation is difficult. The attack may impact other products (scope change).
- CVE-2026-21983High
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. A high-privileged attacker with local access can take over VirtualBox, but exploitation is difficult. The attack may impact other products (scope change).
- CVE-2026-21982High
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. An unauthenticated attacker with access to the physical communication segment attached to the hardware where VirtualBox executes can take over VirtualBox. Exploitation is difficult.
- CVE-2026-21957High
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. It is difficult to exploit, requires high-privileged local access, but can lead to full takeover of VirtualBox. Attacks may impact additional products (scope change).
- CVE-2026-21956High
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. An attacker with high privileges and local access to the infrastructure can easily exploit this flaw, potentially leading to takeover of Oracle VM VirtualBox. The vulnerability has a scope change, meaning attacks may also impact additional products.
- CVE-2026-21955High
Vulnerability in Oracle VM VirtualBox (component: Core) affects versions 7.1.14 and 7.2.4. A high-privileged attacker with local access can compromise VirtualBox, potentially impacting additional products (scope change).
Original NVD description (English source)
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are 7.1.14 and 7.2.4. Easily exploitable vulnerability allows unauthenticated 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 hang or frequently repeatable crash (complete DOS) of Oracle VM VirtualBox. Note: This vulnerability applies to Windows VMs only. CVSS 3.1 Base Score 7.1 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).