CVE-2021-2409

High-privilege hypervisor takeover

Published Jul 20, 2021 · Updated Sep 26, 2024

A vulnerability in Oracle VM VirtualBox before 6.1.24 allows local high-privilege attackers to take over the hypervisor. Oracle identifies the affected component as Core but has not published the underlying operation performed on untrusted input. Exploitation requires logon to the infrastructure running VirtualBox and can provide unauthorized read, write, and service-interruption capabilities across the hypervisor and related products.

CVSS severity8.2
High
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A vulnerability in Oracle VM VirtualBox before 6.1.24 allows local high-privilege attackers to take over the hypervisor. Oracle identifies the affected component as Core but has not published the underlying operation performed on untrusted input. Exploitation requires logon to the infrastructure running VirtualBox and can provide unauthorized read, write, and service-interruption capabilities across the hypervisor and related products.

The record

CVE
CVE-2021-2409
Published
Jul 20, 2021
Updated
Sep 26, 2024
Vendor
Oracle Corporation
Product
Oracle VM VirtualBox
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record 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=unspecified <6.1.24

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Oracle Corporation · Oracle VM VirtualBoxversion=unspecified <6.1.24

Published CVSS scores

8.2Oracle CorporationCVSS:3.1/AV:L/AC:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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