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Oracle VM VirtualBox CVE-2026-71115

| EUVDEUVD-2026-62058 MEDIUM
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-5jgv-f766-jmj4
6.0
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain host admin or root credentials
  2. Delivery
    Log on locally to VirtualBox 7.2.14 host
  3. Exploit
    Exploit Core component vulnerability
  4. Execution
    Cross VM isolation boundary
  5. Impact
    Read confidential guest VM data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires: (1) local logon to the physical or virtual infrastructure hosting Oracle VM VirtualBox - remote network exploitation is not possible per AV:L; (2) high-privilege access (PR:H) on the host, consistent with administrator or root-level credentials; (3) Oracle VM VirtualBox version 7.2.14 installed and running. No user interaction from a guest VM user or victim is needed. What limits exploitation: The local-only attack vector eliminates remote attackers; the high-privilege requirement eliminates unprivileged local users. The scope change means the data accessible beyond VirtualBox itself - likely guest VM memory or storage - is what is exposed. No specific VirtualBox feature flag or non-default configuration is described as a prerequisite in the available data.

Impact

The CVSS 3.1 base score of 6.0 (Medium) is consistent with the constrained exploitation profile: AV:L limits exposure to actors already on the host, and PR:H further restricts to administrators or root-equivalent users - these are significant barriers. However, the scope change (S:C) elevates real-world concern because exploitation crosses VM boundaries, potentially exposing confidential data from multiple guest VMs to a host-level attacker. In shared hosting, VDI, or multi-tenant virtualization scenarios, this lateral data access could be highly valuable to an insider threat or attacker who has already compromised host-level credentials. No EPSS data was provided, preventing quantitative exploitation-likelihood assessment. No CISA KEV listing means active exploitation is not currently confirmed. The 'Authentication Bypass' tag in EUVD data is not fully reconciled with the PR:H prerequisite - this may indicate the bypass occurs against guest-level authentication protections rather than VirtualBox's own access controls. CVSS integrity and availability impacts are both None, limiting blast radius to data confidentiality only, which reduces urgency for environments where VirtualBox guests do not hold sensitive data.

Exploit ScenarioDerived

An insider threat or attacker who has already obtained host administrator or root access on a server running Oracle VM VirtualBox 7.2.14 exploits the Core component vulnerability to cross VM isolation boundaries and read confidential data from one or more guest virtual machines - for example, extracting database credentials, private keys, or business-critical files stored within guest filesystems. No public exploit code has been identified at time of analysis, but the low attack complexity (AC:L) means that once an actor has the required privileges, exploitation does not require specialized knowledge or chaining of additional vulnerabilities.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 19, 2026

Oracle VM VirtualBox 7.2.14 Core component contains a vulnerability that allows a high-privileged local attacker to breach VM isolation boundaries and access all confidential data accessible to VirtualBox, including data from guest virtual machines. The CVSS scope-change metric (S:C) confirms that successful exploitation extends impact beyond the VirtualBox process itself, enabling unauthorized read access to critical data across VM boundaries. No public exploit code has been identified at time of analysis, and no CISA KEV listing is present, but the EUVD 'Authentication Bypass' tag suggests the vulnerability may undermine guest-level authentication or isolation enforcement mechanisms.

RemediationAI

Apply Oracle's August 2026 Critical Security Patch Update, available at https://www.oracle.com/security-alerts/cspuaug2026.html. No specific fixed version number (e.g., 7.2.15) is identified in the available data - the exact patched release should be confirmed through Oracle's advisory. As a compensating control pending patch application, restrict local logon access to VirtualBox hosts to the minimum necessary set of administrators, as PR:H means reducing the pool of privileged local users directly limits exposure. In shared or multi-tenant VirtualBox deployments, consider migrating sensitive guest workloads to isolated hosts with strictly controlled admin access until the patch is applied. These access controls do not eliminate the vulnerability but reduce the attacker population that can reach the exploit condition.

Affected VersionsENISA

Oracle VM VirtualBox 7.2.14

Affected Packages

euvd oracle_vm_virtualbox no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Oracle VM VirtualBox is a Type-2 (hosted) hypervisor running on top of a host OS, managing guest virtual machines through its Core component, which handles privileged operations such as memory mapping, device emulation, and inter-VM communication. The affected version is 7.2.14 (CPE: cpe:2.3:a:oracle:vm_virtualbox:7.2.14:*:*:*:*:*:*:*). The CVSS vector AV:L indicates exploitation occurs from within the host operating system environment rather than remotely. The scope change (S:C) in CVSS 3.1 is significant: it means the vulnerable component (VirtualBox Core) operates in a security context separate from the guest VMs, and the vulnerability crosses that boundary. No CWE identifier was assigned, but the EUVD tag 'Authentication Bypass' suggests the root cause involves improper enforcement of privilege or isolation boundaries within the Core hypervisor component, allowing a host-privileged actor to circumvent protections that normally segregate VM data.

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Severity by source

Vendor (oracle) PRIMARY 6.0 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
vuln.today AI 6.0 MEDIUM

Local-only vector, high privilege required to reach Core component; scope change confirmed by cross-VM data access; no integrity or availability impact described.

3.1 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
4.0 AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/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
Changed
Confidentiality
High
Integrity
None
Availability
None

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. 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 access to critical data or complete access to all Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 6.0 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 95% exploitable
Prevalence
Medium
popular desktop and lab hypervisor, not dominant in enterprise server stacks
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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