CVE-2026-28899

Undergoing Analysis Undergoing Analysis - In Progress

Gatekeeper Bypass in macOS Golden Gate

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Apple Inc.

Description

A logic issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.6, macOS Tahoe 26.7. An app may bypass Gatekeeper checks.

CVSS Scores

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Meta Information

Published

2026-09-14

Last Modified

2026-09-14

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-03

NVD

CVE-2026-28899

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos_golden_gate	27
apple	macos_sequoia	15.8
apple	macos_tahoe	26.6
apple	macos_tahoe	26.7

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is a logic issue that allowed an app to bypass Gatekeeper checks on macOS systems. Gatekeeper is a security feature that verifies apps before allowing them to run. The issue was fixed in specific macOS versions: Golden Gate 27, Sequoia 15.8, and Tahoe 26.6/26.7.

Detection Guidance

This vulnerability involves an app bypassing Gatekeeper checks in macOS versions before Golden Gate 27, Sequoia 15.8, and Tahoe 26.6/26.7. To detect it, verify your macOS version against the patched releases. Check Gatekeeper logs for unauthorized app executions by reviewing system logs or using the command 'log show --predicate 'subsystem == "com.apple.Gatekeeper"' --last 24h'.

Impact Analysis

This vulnerability could allow malicious apps to run on your macOS device without proper verification. This increases the risk of malware or unauthorized software executing on your system, potentially compromising your data or privacy.

Compliance Impact

The vulnerability allows an app to bypass Gatekeeper checks, which could enable unauthorized or malicious software to run on a system. This may impact compliance with standards like GDPR or HIPAA by increasing the risk of data breaches or unauthorized access to sensitive information.

Mitigation Strategies

Update to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.6/26.7 or later to address the Gatekeeper bypass issue.

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