CVE-2025-43393

Local sandbox escape via quarantine permissions

Published Dec 12, 2025 · Updated Dec 12, 2025

Sandbox escape in macOS Tahoe before 26.1 allows local users to escape an app sandbox through the quarantine component. Apple identifies a permissions issue in quarantine but has not disclosed the faulty permission check or operation that lets the app cross the boundary. Execution of an attacker-controlled sandboxed app is required; escape permits limited access to or modification of resources outside the sandbox without interrupting service.

CVSS severity5.2
Medium
EPSS probability0.15%
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 macOS Tahoe before 26.1 allows local users to escape an app sandbox through the quarantine component. Apple identifies a permissions issue in quarantine but has not disclosed the faulty permission check or operation that lets the app cross the boundary. Execution of an attacker-controlled sandboxed app is required; escape permits limited access to or modification of resources outside the sandbox without interrupting service.

The record

CVE
CVE-2025-43393
Published
Dec 12, 2025
Updated
Dec 12, 2025
Vendor
Apple
Product
macOS
Classifications
CWE-284, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 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=unspecified <26.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Apple · macOSversion=unspecified <26.1

Published CVSS scores

5.2NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.2CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/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
Privilegesauthenticated
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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