CVE-2022-26738
📋 TL;DR
CVE-2022-26738 is an out-of-bounds write vulnerability in Apple operating systems that allows an application to execute arbitrary code with kernel privileges. This affects users of tvOS, macOS Monterey, iOS, and iPadOS before version 15.5. Successful exploitation gives attackers complete control over affected devices.
💻 Affected Systems
- tvOS
- macOS Monterey
- iOS
- iPadOS
📦 What is this software?
Ipados by Apple
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 →Tvos by Apple
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with kernel-level persistence, data theft, and ability to bypass all security controls.
Likely Case
Malicious app gains kernel privileges to install backdoors, steal credentials, or disable security features.
If Mitigated
Attack fails due to updated OS versions or app sandboxing preventing initial access.
🎯 Exploit Status
Requires user to install/execute malicious application. No public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: tvOS 15.5, macOS Monterey 12.4, iOS 15.5, iPadOS 15.5
Vendor Advisory: https://support.apple.com/en-us/HT213254
Restart Required: Yes
Instructions:
1. Open Settings app. 2. Navigate to General > Software Update. 3. Install available update. 4. Restart device when prompted.
🔧 Temporary Workarounds
Restrict App Installation
allOnly allow installation from trusted sources like App Store
Not applicable - configure via device settings
🧯 If You Can't Patch
- Isolate affected devices from critical networks
- Implement application allowlisting to prevent unauthorized app execution
🔍 How to Verify
Check if Vulnerable:
Check OS version in Settings > General > AboutCheck Version:
Not applicable - check via device settings interfaceVerify Fix Applied:
Verify OS version is tvOS 15.5+, macOS Monterey 12.4+, iOS 15.5+, or iPadOS 15.5+📡 Detection & Monitoring
Log Indicators:
- Unexpected kernel module loading
- Privilege escalation attempts
Network Indicators:
- Unusual outbound connections from system processes
SIEM Query:
Not applicable - device-level vulnerability