CVE-2026-20601
📋 TL;DR
This CVE describes a permissions vulnerability in macOS that allows applications to monitor keystrokes without proper user authorization. It affects macOS systems running versions prior to Tahoe 26.3. The vulnerability enables potential keylogging and privacy violations.
💻 Affected Systems
- macOS
📦 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 →⚠️ Risk & Real-World Impact
Worst Case
Malicious applications could capture sensitive information including passwords, financial data, and confidential communications without user knowledge or consent.
Likely Case
Malware or compromised applications could perform keylogging to steal credentials and sensitive user data.
If Mitigated
With proper application vetting and security controls, the risk is limited to unauthorized applications attempting to bypass permission prompts.
🎯 Exploit Status
Exploitation requires a malicious application to be installed and executed on the target system. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Tahoe 26.3
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 macOS Tahoe 26.3 update 5. Follow on-screen instructions to complete installation
🔧 Temporary Workarounds
Application Permissions Review
macOSReview and restrict application permissions for keyboard/mouse access in System Settings
open 'x-apple.systempreferences:com.apple.preference.security?Privacy_Accessibility'
open 'x-apple.systempreferences:com.apple.preference.security?Privacy_InputMonitoring'
🧯 If You Can't Patch
- Restrict installation of untrusted applications through MDM or parental controls
- Regularly review and audit application permissions in System Settings > Privacy & Security
🔍 How to Verify
Check if Vulnerable:
Check macOS version in System Settings > General > About. If version is earlier than Tahoe 26.3, system is vulnerable.Check Version:
sw_versVerify Fix Applied:
Verify macOS version shows 'Tahoe 26.3' or later in System Settings > General > About.📡 Detection & Monitoring
Log Indicators:
- Unusual application requests for accessibility or input monitoring permissions
- Applications accessing keyboard events without proper authorization
Network Indicators:
- Unusual outbound data transfers following keyboard input patterns
SIEM Query:
process:accessibility OR process:input_monitoring AND event:permission_request AND NOT user:approved