CVE-2022-26775
📋 TL;DR
CVE-2022-26775 is an integer overflow vulnerability in macOS that allows attackers to cause application crashes or execute arbitrary code. This affects macOS Catalina, Big Sur, and Monterey systems. Successful exploitation could lead to full system compromise.
💻 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
Remote code execution with kernel privileges leading to complete system takeover and persistent backdoor installation.
Likely Case
Application termination (DoS) or limited code execution in user context, potentially leading to privilege escalation.
If Mitigated
No impact if systems are fully patched with Apple's security updates.
🎯 Exploit Status
Apple's description suggests potential for unauthenticated exploitation, but no public exploits have been confirmed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Security Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6
Vendor Advisory: https://support.apple.com/en-us/HT213255
Restart Required: Yes
Instructions:
1. Open System Preferences > Software Update. 2. Install all available updates. 3. Restart when prompted. 4. Verify installation by checking system version.
🔧 Temporary Workarounds
Network segmentation
allIsolate vulnerable macOS systems from untrusted networks
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Deploy endpoint detection and response (EDR) solutions to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check macOS version: System Preferences > About This Mac. If version is Catalina without Security Update 2022-004, Big Sur before 11.6.6, or Monterey before 12.4, system is vulnerable.Check Version:
sw_versVerify Fix Applied:
Verify macOS version is: Catalina with Security Update 2022-004, Big Sur 11.6.6 or later, or Monterey 12.4 or later.📡 Detection & Monitoring
Log Indicators:
- Unexpected application crashes, kernel panics, unauthorized process execution
Network Indicators:
- Unusual outbound connections from macOS systems
SIEM Query:
source="macos" AND (event="crash" OR event="kernel_panic") AND severity=high🔗 References
- https://support.apple.com/en-us/HT213255
- https://support.apple.com/en-us/HT213257
- https://support.apple.com/kb/HT213253
- https://support.apple.com/kb/HT213254
- https://support.apple.com/kb/HT213258
- https://support.apple.com/en-us/HT213255
- https://support.apple.com/en-us/HT213257
- https://support.apple.com/kb/HT213253
- https://support.apple.com/kb/HT213254
- https://support.apple.com/kb/HT213258
