CVE-2023-42838

Sandbox escape via quarantine access control flaw

Published Feb 21, 2024 · Updated Nov 4, 2025

Improper access control in macOS quarantine allows local users to execute code outside an app sandbox or with elevated privileges. The quarantine component applies an undisclosed, incorrect access decision to a sandboxed app; Apple has not identified the affected operation or input. Exploitation requires a user to run an app on an affected Mac, after which code can escape that app's sandbox or gain privileges.

CVSS severity8.6
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in macOS quarantine allows local users to execute code outside an app sandbox or with elevated privileges. The quarantine component applies an undisclosed, incorrect access decision to a sandboxed app; Apple has not identified the affected operation or input. Exploitation requires a user to run an app on an affected Mac, after which code can escape that app's sandbox or gain privileges.

The record

CVE
CVE-2023-42838
Published
Feb 21, 2024
Updated
Nov 4, 2025
Vendor
Apple
Product
macOS
Classifications
CWE-284, T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record 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=0 <12.7.2
  2. Affected versionversion=13.0 <13.6.3
  3. Affected versionversion=14.0 <14.1
  4. Affected versionversion=unspecified <12.7
  5. Affected versionversion=unspecified <13.6
  6. Affected versionversion=unspecified <14.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Apple · macOSversion=0 <12.7.2; version=13.0 <13.6.3; version=14.0 <14.1; version=unspecified <12.7; version=unspecified <13.6; version=unspecified <14.1

Published CVSS scores

8.6NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
8.2CISA-ADPCVSS: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.

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 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.

Technologies

Your stack

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Your stack

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