CVE-2023-34642Public exploit

Kiosk escape via incomplete file-dialog blacklist

Published Jun 19, 2023 · Updated Dec 11, 2024

Sandbox escape in KioWare for Windows 8.33 and earlier allows local users to open an unprivileged command prompt. The KioWare Kiosk Browser dialog blacklist does not block showDirectoryPicker(), so its file picker exposes a path to launch the command prompt. A user with access to a locked-down Windows 10 kiosk session and JavaScript execution in the kiosk browser can run commands with that user's privileges.

CVSS severity7.8
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox escape in KioWare for Windows 8.33 and earlier allows local users to open an unprivileged command prompt. The KioWare Kiosk Browser dialog blacklist does not block showDirectoryPicker(), so its file picker exposes a path to launch the command prompt. A user with access to a locked-down Windows 10 kiosk session and JavaScript execution in the kiosk browser can run commands with that user's privileges.

The record

CVE
CVE-2023-34642
Published
Jun 19, 2023
Updated
Dec 11, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.003
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 11, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.003Windows Command Shell

Public exploit references

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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