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    CVE-2026-21986

    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).

    Published:Jan 20, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 20, 2026
    EPSS Score:0.00021
    CVSS Score:7.1

    Affected Products

    Vendor
    Oracle
    Product
    Vm Virtualbox

    Exploits

    https://github.com/MohaBars/CVE-2026-21986-VirtualBox-DoS

    Related CVEs

    CVE-2026-71151 (CVSS 5.6) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71141 (CVSS 7.7) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71140 (CVSS 3.4) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71139 (CVSS 4.4) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71138 (CVSS 7.3) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71137 (CVSS 6) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71136 (CVSS 7.3) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71135 (CVSS 6) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71134 (CVSS 5.7) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …
    CVE-2026-71132 (CVSS 5.3) — Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High