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Oracle VM VirtualBox CVE-2026-71141

| EUVDEUVD-2026-62083 HIGH
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-4p6h-mrrx-4qc2
7.7
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
    Gain local logon to VirtualBox host
  2. Delivery
    Position malicious artifact or state targeting Core component
  3. Exploit
    Wait for legitimate user to interact with VirtualBox
  4. Execution
    Trigger vulnerability via user interaction
  5. Persist
    Modify or delete critical VirtualBox data (I:H) and read subset of data (C:L)
  6. Impact
    Scope change reaches host system or additional VMs

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

The attacker must have logon access (local session) to the physical or virtual infrastructure where Oracle VM VirtualBox 7.2.14 is executing - this is the primary gate enforced by AV:L in the CVSS vector. No elevated privileges within that session are required (PR:N), meaning a low-privileged local OS account is sufficient. A separate, legitimate user must perform human interaction with VirtualBox to trigger the vulnerability (UI:R); the attacker cannot fully automate exploitation without this third-party action. Exploitation is limited to Oracle VM VirtualBox version 7.2.14 specifically as confirmed in available data. The scope change (S:C) means successful exploitation can extend beyond VirtualBox to affect the host OS or co-resident VMs, but initial access is bounded to the local infrastructure context.

Impact

The CVSS 3.1 score of 7.7 (High) is driven primarily by the scope change and high integrity impact rather than broad attack surface, since AV:L constrains exposure to actors with local infrastructure access. The combination of PR:N (no privileges required) and S:C is notable: even a low-privileged local user or guest VM operator could trigger this. EPSS data is not available in the provided intelligence, and no CISA KEV listing exists, indicating no confirmed active exploitation at time of analysis. No public POC is identified. The primary realistic risk is in shared or multi-tenant VirtualBox deployments - developer workstations, CI/CD build agents, or virtualization labs - where an attacker already on the host could leverage the scope change to move laterally to the host OS or tamper with other VMs. The UI:R requirement adds friction but does not eliminate risk in environments with regular VM management activity. For single-user, isolated VirtualBox deployments, real-world risk is lower than the CVSS score implies.

Exploit ScenarioDerived

An attacker with local logon access to a host running VirtualBox 7.2.14 prepares a malicious artifact or environment targeting the Core component. When a legitimate administrator or user performs a routine VM operation - such as starting, stopping, or managing a virtual machine - the interaction triggers the vulnerability, allowing the attacker to modify or delete critical VirtualBox data and, due to the scope change, potentially affect the host system or other co-resident VMs. No public proof-of-concept exploit is identified at time of analysis, so the specific triggering mechanism within Core remains undisclosed.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 18, 2026

Oracle VM VirtualBox 7.2.14 Core component exposes a scope-changing integrity vulnerability that allows a local unauthenticated attacker - with logon access to the infrastructure hosting the hypervisor - to critically compromise VirtualBox data when a legitimate third party interacts with the product. The attack vector is local and requires human interaction, but the CVSS scope change (S:C) indicates that a successful exploit can break VM containment and significantly impact the host system or co-resident components beyond VirtualBox itself. No public exploit is identified at time of analysis, and the vulnerability is addressed via Oracle's August 2026 Critical Security Patch Update.

RemediationAI

Apply Oracle's August 2026 Critical Security Patch Update, available through the Oracle advisory at https://www.oracle.com/security-alerts/cspuaug2026.html. A specific patched release version number is not stated in the available intelligence - the exact fix version should be confirmed directly from Oracle's advisory before upgrading. As a compensating control pending patching, restrict logon access to the host infrastructure where VirtualBox executes to trusted, least-privilege accounts; reducing the number of principals with local access directly eliminates the attack surface given the AV:L vector. Additionally, minimizing unsupervised interactive VM management sessions reduces the exploitable UI:R window. Note that restricting host login does not eliminate the vulnerability but significantly raises the bar for exploitation.

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 hypervisor (runs atop a host operating system) whose Core component manages fundamental guest VM lifecycle operations including memory, I/O, and device emulation. The affected version is precisely 7.2.14 per EUVD-2026-62083. The CVSS vector AV:L indicates that the vulnerable execution path is accessible to anyone with logon access to the host infrastructure - consistent with scenarios where a malicious actor can execute code on the host or interact with the hypervisor process. The scope change flag (S:C) is the most technically significant marker here: it signifies the vulnerability breaks the VM isolation boundary, enabling impacts beyond the VirtualBox process itself - such as the host OS or sibling VMs. CWE is not assigned in available data, so the precise root cause class (e.g., buffer overflow, type confusion, use-after-free) cannot be confirmed from current intelligence.

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Severity by source

Vendor (oracle) PRIMARY 7.7 HIGH
AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L
vuln.today AI 7.7 HIGH

Local infrastructure logon required (AV:L), no privileges needed (PR:N), third-party user interaction required (UI:R), and scope change to host or sibling VMs (S:C) with high integrity and partial confidentiality/availability impacts match the Oracle-provided description exactly.

3.1 AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
Low

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 unauthenticated attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. Successful attacks require human interaction from a person other than the attacker and 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 creation, deletion or modification access to critical data or all Oracle VM VirtualBox accessible data as well as unauthorized read access to a subset of Oracle VM VirtualBox accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle VM VirtualBox. CVSS 3.1 Base Score 7.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L).

Executive ViewAI

Why It Matters

Oracle VM VirtualBox 7.2.14 contains a scope-changing integrity vulnerability (CVSS 7.7) that allows local attackers to break VM containment and compromise the hypervisor host system and co-resident virtual machines. Organizations relying on VirtualBox isolation for multi-tenant infrastructure or security-sensitive workloads face potential unauthorized access and data exposure across VM boundaries.

Business Impact: High
Compensating Controls

Restrict and audit all logon access to hypervisor infrastructure; implement host-level access controls limiting who can interact with VirtualBox systems; segregate sensitive workloads to isolated hypervisors; disable VirtualBox on systems not requiring it; deploy host-based monitoring to detect suspicious process or privilege escalation activity; implement network segmentation between hypervisors and critical systems; air-gap VirtualBox deployments from business-critical infrastructure until patching is available.

Threat Intelligence Overview

EPSS Score
0.1%
Top 95% exploitable
Prevalence
Medium
popular desktop and developer hypervisor, limited enterprise production use
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 HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Scheduled
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
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.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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