CVE-2026-20612

5.5 MEDIUM

📋 TL;DR

This macOS vulnerability allows applications to bypass privacy controls and access sensitive user data without proper authorization. It affects macOS Sequoia, Tahoe, and Sonoma operating systems before specific patch versions. Users running vulnerable macOS versions are at risk of data exposure.

💻 Affected Systems

Products:
  • macOS
Versions: Versions before macOS Sequoia 15.7.4, macOS Tahoe 26.3, macOS Sonoma 14.8.4
Operating Systems: macOS Sequoia, macOS Tahoe, macOS Sonoma
Default Config Vulnerable: ⚠️ Yes
Notes: All default installations of affected macOS versions are vulnerable. The vulnerability relates to privacy control bypass mechanisms.

📦 What is this software?

Macos by Apple

macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...

Learn more about Macos →

Macos by Apple

macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...

Learn more about Macos →

Macos by Apple

macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...

Learn more about Macos →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Malicious applications could access sensitive user data including personal files, credentials, or private information stored on the system.

🟠

Likely Case

Applications with legitimate functionality but excessive permissions could inadvertently access user data they shouldn't have access to.

🟢

If Mitigated

With proper application sandboxing and privacy controls, only minimal data exposure would occur.

🌐 Internet-Facing: LOW - This vulnerability requires local application execution, not remote exploitation.
🏢 Internal Only: MEDIUM - Malicious or compromised applications could exploit this vulnerability locally on affected systems.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires a malicious or compromised application to be installed and executed on the target system. No remote exploitation vector exists.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: macOS Sequoia 15.7.4, macOS Tahoe 26.3, macOS Sonoma 14.8.4

Vendor Advisory: https://support.apple.com/en-us/126348

Restart Required: No

Instructions:

1. Open System Settings 2. Click General 3. Click Software Update 4. Install available updates 5. Follow on-screen instructions to complete installation

🔧 Temporary Workarounds

Restrict Application Permissions

macOS

Manually review and restrict application permissions in System Settings to limit data access

Use Application Sandboxing

macOS

Ensure applications run in sandboxed environments where possible to limit system access

🧯 If You Can't Patch

  • Implement strict application control policies to only allow trusted applications
  • Use endpoint detection and response (EDR) solutions to monitor for suspicious application behavior

🔍 How to Verify

Check if Vulnerable:

Check macOS version in System Settings > General > About. If version is earlier than the patched versions listed, the system is vulnerable.

Check Version:

sw_vers

Verify Fix Applied:

Verify macOS version matches or exceeds: Sequoia 15.7.4, Tahoe 26.3, or Sonoma 14.8.4

📡 Detection & Monitoring

Log Indicators:

  • Unusual application access to protected directories
  • Privacy permission requests from unexpected applications

Network Indicators:

  • Not applicable - local vulnerability only

SIEM Query:

source="macos" AND (event_type="file_access" OR event_type="privacy_violation") AND target_path CONTAINS "/Users/"

🔗 References

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