CVE-2026-46873

Hypervisor code execution via VMSVGA stack overflow

Published Jun 16, 2026 · Updated Jun 16, 2026

Stack-based buffer overflow in Oracle VM VirtualBox 7.2.8 allows high-privileged guest OS users to execute code in the hypervisor. The VMSVGA device copies guest-controlled data into a fixed-length stack buffer without first validating its length. Exploitation requires high-privileged code execution in a guest and can compromise the hypervisor's confidentiality, integrity, and availability.

CVSS severity7.5
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Oracle VM VirtualBox 7.2.8 allows high-privileged guest OS users to execute code in the hypervisor. The VMSVGA device copies guest-controlled data into a fixed-length stack buffer without first validating its length. Exploitation requires high-privileged code execution in a guest and can compromise the hypervisor's confidentiality, integrity, and availability.

The record

CVE
CVE-2026-46873
Published
Jun 16, 2026
Updated
Jun 16, 2026
Vendor
Oracle
Product
Oracle VM VirtualBox
Classifications
CWE-269, T1611
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.2.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Oracle · Oracle VM VirtualBoxversion=7.2.8

Published CVSS scores

7.5OracleCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1611Escape to Host

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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