CVE-2026-35245

Denial of Service in VirtualBox via RDP

Published Apr 21, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Description

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is 7.2.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via RDP 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 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Analysis

Technical impact

The Oracle VM VirtualBox 7.2.6 contains a flaw in the core component that allows an unauthenticated user with network access via Remote Desktop Protocol to trigger a hang or crash, resulting in a denial of service. The flaw stems from improper handling of RDP input, leading to a controllable failure in the virtual machine host. Attackers can repeatedly exploit this weakness to disrupt the availability of the virtualization environment.

Affected Systems

Oracle Corporation’s Oracle VM VirtualBox version 7.2.6.

Risk and Exploitability

The vulnerability has a CVSS 3.1 Base Score of 7.5, indicating a high impact on availability. The EPSS score is < 1%, and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is an unauthenticated network connection via RDP, requiring no elevated privileges. While the exploitability at present appears moderate, the possibility of an easily triggered remote denial of service makes it a significant risk for environments that deploy this version of VirtualBox.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Oracle Corporation

Oracle VM VirtualBox

affected

Version	Status	Constraints
`7.2.6`	affected	—

Configuration 1 [-]

cpe:2.3:a:oracle:vm_virtualbox:7.2.6:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Oracle

Vm Virtualbox

Version	Status	Scheme	Platform
`7.2.6`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Check Oracle’s security portal for an available patch or update for VirtualBox 7.2.6 and apply it immediately.
If a patch is not yet released, block or restrict RDP traffic to the VirtualBox host using firewall rules or network segmentation to limit exposure to unauthenticated users.
Monitor the VirtualBox host for abnormal crashes or hangs and investigate any anomalous RDP activity to detect ongoing exploitation attempts.

Generated by OpenCVE AI on April 28, 2026 at 15:56 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.253% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://www.oracle.com/security-alerts/cpuapr2026.html

History

Apr 28, 2026 4:15 PM Title updated View changes

Type	Values Removed	Values Added
Title		Denial of Service in VirtualBox via RDP

Apr 28, 2026 8:45 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Remote Desktop–Triggered Denial of Service in Oracle VM VirtualBox 7.2.6
Weaknesses	CWE-400

Apr 22, 2026 4:30 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-284
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Apr 22, 2026 5:00 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Remote Desktop–Triggered Denial of Service in Oracle VM VirtualBox 7.2.6
Weaknesses		CWE-400

Apr 22, 2026 12:00 AM Description updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is 7.2.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via RDP 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 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
First Time appeared		Oracle Oracle vm Virtualbox
CPEs		cpe:2.3:a:oracle:vm_virtualbox:7.2.6:::::::*
Vendors & Products		Oracle Oracle vm Virtualbox
References		https://www.oracle.com/security-alerts/cpuapr2026.html
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}`