CVE-2024-21114Known exploitation

Hypervisor code execution via VirtIOCore buffer overflow

Published Apr 16, 2024 · Updated Aug 15, 2024

Buffer overflow in VirtIOCore in Oracle VM VirtualBox before 7.0.16 allows local users to execute code in the hypervisor. VirtIOCore copies user-supplied data into a buffer without first validating its length, permitting an out-of-bounds write. Exploitation requires high-privileged code execution in a guest and results in host-side hypervisor takeover with confidentiality, integrity, and availability impact.

CVSS severity8.8
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in VirtIOCore in Oracle VM VirtualBox before 7.0.16 allows local users to execute code in the hypervisor. VirtIOCore copies user-supplied data into a buffer without first validating its length, permitting an out-of-bounds write. Exploitation requires high-privileged code execution in a guest and results in host-side hypervisor takeover with confidentiality, integrity, and availability impact.

The record

CVE
CVE-2024-21114
Published
Apr 16, 2024
Updated
Aug 15, 2024
Vendor
Oracle Corporation
Product
Oracle VM VirtualBox
Classifications
CWE-284, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=* <7.0.16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Oracle Corporation · Oracle VM VirtualBoxversion=* <7.0.16

Published CVSS scores

8.8OracleCVSS:3.1/AV:L/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1068Exploitation for Privilege Escalation

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.

Reported exploitation

Technologies

Your stack

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Your stack

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