CVE-2026-86909: An app may be able to bypass Gatekeeper checks in Apple macOS
A logic issue in Apple macOS allowed an app to bypass Gatekeeper checks. This vulnerability was addressed with improved state management and fixed in macOS Golden Gate 27. Gatekeeper is a security feature that enforces app verification to prevent untrusted software from running. The issue affects all macOS versions prior to 27.
AI Analysis
Technical Summary
CVE-2026-86909 describes a logic flaw in macOS that could allow an application to bypass Gatekeeper security checks. Gatekeeper is designed to verify the integrity and trustworthiness of apps before execution. The vulnerability was resolved by improving state management within the system. The fix is included starting with macOS Golden Gate 27, making earlier versions vulnerable.
Potential Impact
An attacker could exploit this logic issue to run applications that bypass Gatekeeper's verification process, potentially allowing untrusted or malicious software to execute on affected macOS systems. This could undermine the security model intended to protect users from unauthorized or harmful applications.
Mitigation Recommendations
A fix is available in macOS Golden Gate 27. Users and administrators should update to this version to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-86909: An app may be able to bypass Gatekeeper checks in Apple macOS
Description
A logic issue in Apple macOS allowed an app to bypass Gatekeeper checks. This vulnerability was addressed with improved state management and fixed in macOS Golden Gate 27. Gatekeeper is a security feature that enforces app verification to prevent untrusted software from running. The issue affects all macOS versions prior to 27.
Affected software
Apple
macOS
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86909 describes a logic flaw in macOS that could allow an application to bypass Gatekeeper security checks. Gatekeeper is designed to verify the integrity and trustworthiness of apps before execution. The vulnerability was resolved by improving state management within the system. The fix is included starting with macOS Golden Gate 27, making earlier versions vulnerable.
Potential Impact
An attacker could exploit this logic issue to run applications that bypass Gatekeeper's verification process, potentially allowing untrusted or malicious software to execute on affected macOS systems. This could undermine the security model intended to protect users from unauthorized or harmful applications.
Mitigation Recommendations
A fix is available in macOS Golden Gate 27. Users and administrators should update to this version to remediate the vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-09-08T16:43:41.874Z
- State
- PUBLISHED
Threat ID: 6aa8611a55bf5e2cf59d312b
Added to database: 09/14/2026, 21:03:22 UTC
Last enriched: 09/14/2026, 21:17:00 UTC
Last updated: 09/14/2026, 21:41:35 UTC
Views: 3
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