CVE-2026-86894

Sandbox Escape via Logic Issue in macOS

Published Sep 14, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A logic issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27. An app may be able to break out of its sandbox.

Analysis

AI-generated

Technical impact

A logic issue was identified in macOS that could allow a malicious or compromised application to escape its sandbox boundaries, potentially compromising the integrity or confidentiality of system resources. The issue was addressed with improved checks in macOS Golden Gate 27. An attacker could utilize the deficient logic to breach the security confinement of a sandboxed application.

Affected Systems

The vulnerability affects Apple macOS versions prior to macOS Golden Gate 27. No specific build numbers are listed, but any macOS release before the Golden Gate fix 27.

Risk and Exploitability

The EPSS score is <1% and the vulnerability is not listed in the CISA KEV catalog. The CVSS score of 7.5 indicates a moderate severity. Because the flaw allows an application to escape its sandbox, the potential impact includes unauthorized access to system resources. The likely attack vector is local, requiring that the attacker run or influence the target application. The vulnerability would only be exploitable by an application that can be executed on the vulnerable system.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade macOS to version Golden Gate 27 or later to receive the vendor-supplied fix.
  • If an upgrade is not immediately possible, restrict the application’s sandbox profile by tightening entitlements and monitor for any sandbox violations in system logs.
  • Apply additional defensive controls such as Gatekeeper and code signing to ensure only trusted applications are executed on the system.

Generated by OpenCVE AI on September 20, 2026 at 20:32 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
References
History
Type Values Removed Values Added
Title Sandbox Escape via Logic Issue in macOS
Type Values Removed Values Added
Title macOS Sandbox Escape via Logic Flaw
Weaknesses CWE-264
CWE-285
Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title macOS Sandbox Escape via Logic Flaw
Weaknesses CWE-264
CWE-285
Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description A logic issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27. An app may be able to break out of its sandbox.
References
Weaknesses
  • CWE-693

    Protection Mechanism Failure

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 26, 2026, 8:42 PM
Reserved
Sep 8, 2026, 4:43 PM
Status
Analyzed
Published
Sep 14, 2026, 9:17 PM
Modified
Sep 16, 2026, 2:47 PM