CVE-2025-30437
📋 TL;DR
This vulnerability in macOS allows malicious applications to corrupt coprocessor memory due to insufficient bounds checking. It affects macOS systems before Sequoia 15.4 and could lead to system instability or potential privilege escalation.
💻 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
An attacker could execute arbitrary code with kernel privileges, leading to complete system compromise, data theft, or persistent backdoor installation.
Likely Case
Malicious applications could cause system crashes, data corruption, or limited privilege escalation within the application's context.
If Mitigated
With proper application sandboxing and security controls, impact would be limited to denial of service within the compromised application's scope.
🎯 Exploit Status
Exploitation requires crafting a malicious application that users must execute. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Sequoia 15.4
Vendor Advisory: https://support.apple.com/en-us/122373
Restart Required: No
Instructions:
1. Open System Settings 2. Click General 3. Click Software Update 4. Install macOS Sequoia 15.4 update 5. Follow on-screen instructions
🔧 Temporary Workarounds
Application Restriction
macOSRestrict installation and execution of untrusted applications using macOS security policies
sudo spctl --master-enable
sudo spctl --enable --label "Mac App Store"
sudo spctl --enable --label "Developer ID"
🧯 If You Can't Patch
- Implement strict application allowlisting to prevent execution of untrusted software
- Enable full disk encryption and monitor for unusual system behavior or crashes
🔍 How to Verify
Check if Vulnerable:
Check macOS version in System Settings > General > About. If version is earlier than 15.4, system is vulnerable.Check Version:
sw_versVerify Fix Applied:
Verify macOS version shows 15.4 or later in System Settings > General > About.📡 Detection & Monitoring
Log Indicators:
- Kernel panics related to coprocessor
- Unexpected application crashes with memory access errors
- Console logs showing bounds check failures
Network Indicators:
- No direct network indicators - local exploitation only
SIEM Query:
source="macos_system_logs" AND ("kernel panic" OR "coprocessor" OR "bounds check")