CVE-2026-20697 Overview
A permissions vulnerability has been identified in multiple versions of Apple macOS that allows applications to access sensitive user data without proper authorization. The issue stems from improper access control mechanisms (CWE-284) that fail to adequately restrict application permissions, potentially exposing private user information to unauthorized applications.
Critical Impact
Malicious or compromised applications may bypass macOS security restrictions to access sensitive user data including personal files, credentials, or other protected information.
Affected Products
- macOS Sequoia versions prior to 15.7.5
- macOS Sonoma versions prior to 14.8.5
- macOS Tahoe versions prior to 26.4
Discovery Timeline
- 2026-03-25 - CVE-2026-20697 published to NVD
- 2026-03-25 - Last updated in NVD database
Technical Details for CVE-2026-20697
Vulnerability Analysis
This vulnerability is classified as an Improper Access Control issue (CWE-284), where the macOS permission enforcement mechanism fails to properly restrict application access to sensitive user data. The flaw allows applications to circumvent the operating system's security boundaries that normally protect user data from unauthorized access.
The vulnerability can be exploited remotely without requiring user interaction, making it particularly concerning for enterprise environments where users may install untrusted applications. The impact is primarily confidentiality-related, as attackers could potentially harvest sensitive user information through a malicious application that appears benign.
Root Cause
The root cause lies in insufficient permission restrictions within the macOS operating system's access control implementation. The system fails to properly validate and enforce permission boundaries, allowing applications to access protected user data directories or APIs that should be restricted. Apple addressed this by implementing additional restrictions to strengthen the permission model.
Attack Vector
The attack vector for this vulnerability is network-based, meaning an attacker could potentially deliver a malicious application through standard distribution channels. Once installed, the application could exploit the permissions flaw to access sensitive user data without triggering appropriate permission dialogs or consent mechanisms.
A successful attack would involve distributing a seemingly legitimate application that contains code designed to exploit this permissions bypass. The application would then enumerate and access protected user data, potentially exfiltrating information to remote servers controlled by the attacker.
Detection Methods for CVE-2026-20697
Indicators of Compromise
- Unusual application access to protected user data directories such as ~/Documents, ~/Desktop, or ~/Downloads without corresponding user permission grants
- Applications accessing sensitive system APIs or keychain data without proper TCC (Transparency, Consent, and Control) authorization entries
- Unexpected outbound network connections from applications that should not require network access
Detection Strategies
- Monitor TCC database (~/Library/Application Support/com.apple.TCC/TCC.db) for unauthorized or suspicious permission entries
- Implement endpoint detection rules to identify applications accessing sensitive user data paths without corresponding permission dialogs
- Review application sandbox violations and permission denials in system logs for patterns indicating exploitation attempts
Monitoring Recommendations
- Enable macOS Unified Logging to capture permission-related events and application access patterns
- Deploy SentinelOne agents configured to monitor file system access to sensitive user directories
- Regularly audit installed applications and their granted permissions using tccutil or similar tools
How to Mitigate CVE-2026-20697
Immediate Actions Required
- Update macOS Sequoia to version 15.7.5 or later
- Update macOS Sonoma to version 14.8.5 or later
- Update macOS Tahoe to version 26.4 or later
- Review currently installed applications and remove any untrusted or unnecessary software
Patch Information
Apple has released security updates addressing this vulnerability across multiple macOS versions. Detailed patch information is available in the following Apple Security Advisories:
Organizations should prioritize applying these updates through standard software update mechanisms or enterprise deployment tools such as Jamf or Munki.
Workarounds
- Restrict application installation to only App Store and identified developers via Gatekeeper settings
- Implement strict application allowlisting policies to prevent untrusted software execution
- Enable Full Disk Access restrictions and regularly audit which applications have been granted elevated permissions
# Check current macOS version to verify patch status
sw_vers -productVersion
# Review TCC permissions database for suspicious entries
sqlite3 ~/Library/Application\ Support/com.apple.TCC/TCC.db "SELECT client,service FROM access WHERE allowed=1"
# Reset TCC permissions for a suspicious application (replace with app bundle ID)
tccutil reset All com.suspicious.application
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
