CVE-2026-21986: High severity Oracle VM VirtualBox vulnerability
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).
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21986?
CVE-2026-21986 has been classified as easily exploitable, posing a significant risk to affected systems.
How do I fix CVE-2026-21986?
To mitigate CVE-2026-21986, upgrade Oracle VM VirtualBox to a version beyond 7.2.4.
Who is affected by CVE-2026-21986?
CVE-2026-21986 affects users of Oracle VM VirtualBox versions 7.1.14 and 7.2.4.
What type of attack can exploit CVE-2026-21986?
CVE-2026-21986 allows an unauthenticated attacker with logon access to compromise the system.
When was CVE-2026-21986 disclosed?
CVE-2026-21986 was disclosed in January 2026 as part of a security alert by Oracle.