What is the CVSS score of CVE-2026-71139?

CVE-2026-71139 has a CVSS 3.1 base score of 4.4 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Oracle VM VirtualBox CVE-2026-71139

EUVD-2026-62081 MEDIUM

Improper Access Control (CWE-284)

2026-08-18 secalert_us@oracle.com

GHSA-3549-m757-p7hc

Oracle Authentication Bypass Vm Virtualbox

4.4

CVSS 3.1 · Vendor: oracle

Severity by source

Vendor (oracle) PRIMARY

4.4 MEDIUM

AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

vuln.today AI

4.4 MEDIUM

Local high-privilege requirement (AV:L, PR:H) with availability-only impact (A:H) and no confidentiality or integrity consequences aligns precisely with the described DoS-only outcome.

3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

4.0 AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Aug 19, 2026 - 03:29 vuln.today

DescriptionCVE.org

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is 7.2.14. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle VM VirtualBox. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

AnalysisAI

Denial-of-service in Oracle VM VirtualBox 7.2.14 Core component allows a high-privileged local attacker to repeatably crash or hang the hypervisor, taking down all hosted virtual machines. Exploitation requires high-privilege local logon access to the host, and Oracle's August 2026 CPU includes a fix. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation	Exploitation requires a high-privileged local account (administrator on Windows or root/sudoer on Linux/macOS) with direct logon access to the host system running Oracle VM VirtualBox 7.2.14. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 4.4 Medium score accurately reflects a constrained threat model: AV:L eliminates remote attack surface entirely, and PR:H limits exploitation to administrators or root-level users already trusted on the host. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation	Apply Oracle's Critical Patch Update for August 2026, available via the Oracle security advisory at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report.