CVE-2026-84555

macOS Authorization Issue Allowing Unauthorized Access to Sensitive User Data

Published Sep 14, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
An authorization issue was addressed with improved access control. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8. An app may be able to access sensitive user data.

Analysis

AI-generated

Technical impact

The vulnerability is an authorization flaw in macOS that can allow an application to access sensitive user data it should not be able to read, which in turn can lead to unintended disclosure of private information. It is inferred from the description that the flaw originates from improper access control and therefore affects the confidentiality of user data. No explicit statement is provided about the extent of impact beyond data leakage.

Affected Systems

Apple macOS prior to macOS Golden Gate 27 and prior to macOS Sequoia 15.8 is affected.

Risk and Exploitability

The EPSS score of less than 1% indicates a low likelihood of exploitation, and the vulnerability is not listed in CISA's KEV catalog. The flaw involves improper access control, allowing any application running on the system to potentially read or exfiltrate sensitive data; it is inferred that this is a consequence of the authorization issue described. While the current exploitation probability remains low, it is inferred that local attackers could leverage this weakness to access private information, making timely patching and monitoring important.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update macOS to macOS Golden Gate 27, macOS Sequoia 15.8, or later to receive the access‑control fix issued by Apple.
  • Review the privacy permissions for all installed applications and revoke any unnecessary access to sensitive resources such as contacts, location, or files.
  • Enable system integrity protection and monitor system logs for suspicious activity that may indicate unauthorized access attempts.

Generated by OpenCVE AI on September 20, 2026 at 18:44 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title macOS Authorization Issue Allowing Unauthorized Access to Sensitive User Data
Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Authorization Vulnerability Enabling Unauthorized Access to User Data on macOS
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

ssvc

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

Type Values Removed Values Added
Title Authorization Vulnerability Enabling Unauthorized Access to User Data on macOS
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 authorization issue was addressed with improved access control. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8. An app may be able to access sensitive user data.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 26, 2026, 8:43 PM
Reserved
Sep 1, 2026, 9:13 PM
Status
Analyzed
Published
Sep 14, 2026, 9:17 PM
Modified
Sep 16, 2026, 6:00 PM