CVE-2026-43789

macOS Sandbox Restriction Exploit Enables Unauthorized Data Access

View on CVE.org
Published Sep 14, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to access user-sensitive data.

Analysis

AI-generated

Technical impact

An access issue related to macOS sandbox restrictions allows an application to read user‑sensitive data. The flaw enables bypassing normal sandbox boundaries, enabling privileged data exposure. This can lead to exposed private information without proper authorization, compromising confidentiality.

Affected Systems

Apple macOS is affected. The vulnerability impacts macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7. No other Apple operating systems at this time.

Risk and Exploitability

The exploitability requires local execution of an application that can leverage the sandbox misconfiguration. The CVSS score is 5.5, indicating moderate severity. Based on the description, it is inferred that the likely attack vector is local execution of a malicious application. Attack install a malicious application that bypasses the updated sandbox controls. EPSS score is < 1% and the CVE is not listed in the CISA KEV catalog. Immediate action is still recommended.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade to the latest macOS release that includes the sandbox restriction fix (Golden Gate 27, Sequoia 15.8, or Tahoe 26.7).
  • Use system privacy settings to limit applications’ access to sensitive data until the update is applied.
  • Monitor for new updates or advisories from Apple regarding this issue.

Generated by OpenCVE AI on September 20, 2026 at 20:38 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Title macOS Sandbox Restriction Exploit Enables Unauthorized Data Access
Type Values Removed Values Added
Metrics cvssV3_1

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

 ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}
Type Values Removed Values Added
Weaknesses CWE-862
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}
Type Values Removed Values Added
Title macOS Sandbox Restriction Bypass Allowing Access to User‑Sensitive Data
Weaknesses CWE-284
Type Values Removed Values Added
Title macOS Sandbox Restriction Bypass Allowing Access to User‑Sensitive Data
Weaknesses CWE-284
Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to access user-sensitive data.
References
Earlier changes (2)
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 26, 2026, 8:39 PM
Reserved
May 1, 2026, 10:46 PM

View source JSON

Updated
Sep 17, 2026, 3:04 PM

JSON

Status
Modified
Published
Sep 14, 2026, 9:17 PM
Modified
Sep 17, 2026, 4:17 PM

View source JSON

No data.

Updated
Sep 20, 2026, 8:45 PM

JSON