CVE-2022-39423Known exploitation

Host data disclosure via SLIRP out-of-bounds read

Published Oct 18, 2022 · Updated Sep 23, 2024

Information disclosure in Oracle VM VirtualBox before 6.1.38 allows local users to read hypervisor-accessible data from a guest. The SLIRP sosendoob method fails to validate guest-supplied data before reading past the end of an allocated object. Exploitation requires high-privileged code execution in the guest and exposes sensitive data without modifying it or interrupting service.

CVSS severity6.0
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Oracle VM VirtualBox before 6.1.38 allows local users to read hypervisor-accessible data from a guest. The SLIRP sosendoob method fails to validate guest-supplied data before reading past the end of an allocated object. Exploitation requires high-privileged code execution in the guest and exposes sensitive data without modifying it or interrupting service.

The record

CVE
CVE-2022-39423
Published
Oct 18, 2022
Updated
Sep 23, 2024
Vendor
Oracle Corporation
Product
Oracle VM VirtualBox
Classifications
T1611
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <6.1.38

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Oracle Corporation · Oracle VM VirtualBoxversion=unspecified <6.1.38

Published CVSS scores

6.0Oracle CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

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)
Vectorlocal
Privilegesadmin
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

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.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo