CVE-2025-43326
📋 TL;DR
An out-of-bounds read vulnerability in macOS allows applications to access sensitive user data without proper authorization. This affects macOS Sonoma and Sequoia users running versions before the security updates. The vulnerability could expose private information stored on affected systems.
💻 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 →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 application could read arbitrary memory locations, potentially exposing passwords, encryption keys, or other sensitive data stored in memory.
Likely Case
Malicious or compromised applications could access user data they shouldn't have permission to read, leading to data leakage.
If Mitigated
With proper application sandboxing and least-privilege principles, impact would be limited to data accessible within the compromised application's context.
🎯 Exploit Status
Requires user to run a malicious application. No known public exploits, but out-of-bounds read vulnerabilities can sometimes be chained with other issues for more severe impact.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Sonoma 14.8, macOS Sequoia 15.7
Vendor Advisory: https://support.apple.com/en-us/125111
Restart Required: Yes
Instructions:
1. Open System Settings > General > Software Update. 2. Install available updates. 3. Restart when prompted. 4. Verify update completed successfully.
🔧 Temporary Workarounds
Application Restriction
macOSRestrict installation and execution of untrusted applications to reduce attack surface.
sudo spctl --master-enable
sudo spctl --enable --label "Developer ID"
🧯 If You Can't Patch
- Implement strict application allowlisting to prevent execution of untrusted software
- Use macOS privacy controls to limit application access to sensitive data locations
🔍 How to Verify
Check if Vulnerable:
Check macOS version in System Settings > General > About. If version is Sonoma < 14.8 or Sequoia < 15.7, system is vulnerable.Check Version:
sw_versVerify Fix Applied:
Verify macOS version shows Sonoma 14.8 or Sequoia 15.7 or later in System Settings > General > About.📡 Detection & Monitoring
Log Indicators:
- Unusual application crashes, unexpected memory access patterns in system logs
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
source="macos_system_logs" AND (process_crash OR memory_access_violation)