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Oracle VM VirtualBox CVE-2026-71131

| EUVDEUVD-2026-62074 HIGH
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-95v2-h58g-mm3h
8.6
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

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

  1. Recon
    Gain local host infrastructure access
  2. Delivery
    Launch or attach to guest VM
  3. Exploit
    Craft malicious guest payload or device I/O
  4. Install
    Induce victim user interaction
  5. C2
    Trigger Core component vulnerability
  6. Execute
    Escape guest-host boundary
  7. Impact
    Achieve full VirtualBox host takeover

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 to the physical or virtual infrastructure where Oracle VM VirtualBox 7.2.14 is executing (AV:L) - this is not a remote network-exploitable vulnerability. Human interaction from a person other than the attacker is explicitly required (UI:R); the precise interaction is unspecified in available data but is a necessary prerequisite. No VirtualBox application-level privileges are required (PR:N), meaning a guest VM user or unprivileged local user can be the attacker. Exploitation is limited to VirtualBox version 7.2.14 specifically, as stated in the Oracle CPU. Limiting factors include: mandatory local access to the host infrastructure, mandatory victim interaction, and a single affected version (7.2.14), all of which reduce opportunistic exploit surface compared to the raw CVSS score suggests.

Impact

The CVSS 3.1 base score of 8.6 (High) is driven primarily by the scope change and full CIA impact, but must be contextualized carefully. The local attack vector (AV:L) meaningfully constrains exploitability compared to network-reachable vulnerabilities - the attacker must already have logon access to the host infrastructure, limiting opportunistic mass exploitation. User interaction (UI:R) adds a further barrier, requiring a victim to perform some action (e.g., running a guest VM, opening a crafted disk image, or interacting with a shared device). No EPSS score was provided in the input data, so probabilistic exploitation likelihood cannot be quantified. No CISA KEV listing is present and no public proof-of-concept code has been identified, suggesting exploitation remains theoretical or limited to sophisticated actors at this time. The scope change is the most alarming signal: if this is a VM escape, the host system and any co-located VMs are at risk, amplifying blast radius beyond a single VM. Oracle tags this as 'Information Disclosure' which conflicts with the full CIA takeover CVSS impact - this discrepancy should be verified against the Oracle CPU August 2026 advisory directly. Real-world priority is moderate-to-high for multi-tenant or shared infrastructure environments running VirtualBox where guest users are semi-trusted; lower for isolated single-user desktop deployments.

Exploit ScenarioDerived

An attacker with logon access to a shared server or workstation running VirtualBox 7.2.14 launches or connects to a guest VM and crafts a malicious interaction - such as a specially constructed disk image, device I/O sequence, or shared folder operation - then waits for or social-engineers a privileged user on the host to interact with the VM or trigger the vulnerable code path. Upon successful exploitation, the attacker escapes the guest VM boundary and achieves code execution within the VirtualBox host process, enabling full control of the host operating system and any co-resident VMs. No public proof-of-concept exists at time of analysis, placing this scenario currently within reach of skilled threat actors with local access rather than commodity attackers.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 18, 2026

Full takeover of Oracle VM VirtualBox 7.2.14 is achievable by a local, unprivileged attacker who can induce a victim user to interact with a malicious guest or crafted input, with the scope change indicator in the CVSS vector (S:C) strongly suggesting a guest-to-host boundary breach impacting the underlying infrastructure. The complete C:H/I:H/A:H impact triad confirms that successful exploitation results in total loss of confidentiality, integrity, and availability of both the VirtualBox process and potentially the host system. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis.

RemediationAI

Apply Oracle's Critical Patch Update for August 2026, which addresses this vulnerability; consult the advisory at https://www.oracle.com/security-alerts/cspuaug2026.html for the specific patched version - no exact fix version number is independently confirmed in the available data beyond the CPU reference. As a compensating control pending patching, restrict local logon access to VirtualBox host systems to only fully trusted users, eliminating the attacker's required infrastructure foothold (AV:L). Additionally, disable non-essential guest-to-host features such as shared folders, USB passthrough, and clipboard integration, as these device emulation surfaces are common VM escape vectors - note this will reduce guest VM functionality. In multi-tenant environments, isolate VirtualBox hosts on dedicated hardware rather than shared infrastructure to limit lateral blast radius in the event of a scope-change exploit.

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

The vulnerability resides in the Core component of Oracle VM VirtualBox 7.2.14, which encompasses the hypervisor engine responsible for guest CPU emulation, memory isolation, and device virtualization. The CVSS scope-change indicator (S:C) is architecturally significant: it indicates that successful exploitation crosses the guest-to-host trust boundary, a condition typical of VM escape vulnerabilities where a flaw in device emulation (e.g., graphics, USB, shared folders, or network adapter emulation) allows a guest-context attacker to gain code execution in the host process or kernel. The local attack vector (AV:L) confirms the attacker must have logon access to the infrastructure hosting VirtualBox - consistent with a malicious or compromised guest VM user. No CWE has been assigned, leaving the root cause class (e.g., buffer overflow, type confusion, use-after-free in device emulation) unconfirmed from available data. Affected CPE: Oracle VM VirtualBox 7.2.14 on supported host platforms per EUVD-2026-62074.

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Severity by source

Vendor (oracle) PRIMARY 8.6 HIGH
AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
vuln.today AI 8.6 HIGH

Local vector confirmed by 'logon to infrastructure' prerequisite; PR:N because no VirtualBox-level credentials needed; UI:R and S:C explicitly stated; full CIA impact from confirmed takeover outcome.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

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 takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle VM VirtualBox 7.2.14 contains a guest-to-host escape vulnerability (CVSS 8.6) allowing local attackers to completely compromise the hypervisor and underlying system through malicious guest interaction; no public exploit identified at time of analysis. Organizations using this version for development or untrusted workloads face immediate risk of full system compromise with potential for lateral movement to other infrastructure.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: implement strict local access controls limiting VirtualBox system access to trusted administrators; restrict execution to known-good guest images and prohibit untrusted or development VMs; network-isolate affected VirtualBox hosts to prevent lateral movement; establish system monitoring and logging to detect abnormal process behavior indicating exploit attempts; maintain verified backups and incident response procedures assuming host compromise.

Threat Intelligence Overview

EPSS Score
0.2%
Top 94% exploitable
Prevalence
High
widely used desktop and developer virtualization platform globally
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 0.2%
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
Total

Priority Score

43
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +43
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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