CVE-2022-39426Network attack vector

Unauthenticated remote takeover

Published Oct 18, 2022 · Updated Sep 17, 2024

Missing authentication in Oracle VM VirtualBox Core before 6.1.40 allows remote attackers to take over VirtualBox through VRDP. Oracle has not published the affected function or the operation that mishandles unauthenticated VRDP traffic. Exploitation requires network access to an enabled VRDP service; successful attacks compromise the virtualization service's confidentiality, integrity, and availability.

CVSS severity8.1
High
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Oracle VM VirtualBox Core before 6.1.40 allows remote attackers to take over VirtualBox through VRDP. Oracle has not published the affected function or the operation that mishandles unauthenticated VRDP traffic. Exploitation requires network access to an enabled VRDP service; successful attacks compromise the virtualization service's confidentiality, integrity, and availability.

The record

CVE
CVE-2022-39426
Published
Oct 18, 2022
Updated
Sep 17, 2024
Vendor
Oracle Corporation
Product
Oracle VM VirtualBox
Classifications
CWE-306, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 <6.1.40

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle VM VirtualBoxversion=unspecified <6.1.40

Published CVSS scores

8.1Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1210Exploitation of Remote Services

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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