CVE-2025-43417

5.5 MEDIUM

📋 TL;DR

A path handling vulnerability in macOS allows applications to bypass intended restrictions and access sensitive user data. This affects macOS systems before Sonoma 14.8.4. The issue involves improper path validation that could be exploited by malicious or compromised applications.

💻 Affected Systems

Products:
  • macOS
Versions: Versions before macOS Sonoma 14.8.4
Operating Systems: macOS
Default Config Vulnerable: ⚠️ Yes
Notes: All default macOS installations before the patched version are vulnerable. The vulnerability affects the operating system's path handling logic.

📦 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

A malicious application could access sensitive user files including documents, credentials, or personal data stored in normally protected directories, leading to data theft or privacy violation.

🟠

Likely Case

A compromised legitimate application could inadvertently or maliciously access user data it shouldn't have permissions to read, potentially exposing personal information.

🟢

If Mitigated

With proper application vetting and sandboxing, the risk is limited to applications that have already bypassed initial security controls.

🌐 Internet-Facing: LOW - This vulnerability requires local application execution and cannot be directly exploited over the internet.
🏢 Internal Only: MEDIUM - Requires a malicious or compromised application to be installed and executed on the target system.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires a malicious or compromised application to be installed and executed on the target system. No public exploit code is currently available.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: macOS Sonoma 14.8.4

Vendor Advisory: https://support.apple.com/en-us/126350

Restart Required: No

Instructions:

1. Open System Settings 2. Click General 3. Click Software Update 4. Install macOS Sonoma 14.8.4 update 5. Follow on-screen instructions to complete installation

🔧 Temporary Workarounds

Application Sandboxing Enforcement

macOS

Ensure all applications run with appropriate sandboxing restrictions to limit file system access

Limit Application Installation

macOS

Only install applications from trusted sources and the Mac App Store

🧯 If You Can't Patch

  • Implement strict application control policies to only allow trusted, signed applications
  • Use full disk encryption and limit user privileges to reduce potential data exposure

🔍 How to Verify

Check if Vulnerable:

Check macOS version in System Settings > General > About. If version is earlier than 14.8.4, the system is vulnerable.

Check Version:

sw_vers

Verify Fix Applied:

Verify macOS version shows 14.8.4 or later in System Settings > General > About.

📡 Detection & Monitoring

Log Indicators:

  • Unusual file access patterns by applications
  • Applications accessing files outside their expected directories

Network Indicators:

  • No direct network indicators as this is a local vulnerability

SIEM Query:

source="macos" (event_type="file_access" AND process_path NOT IN allowed_apps) OR (file_path CONTAINS sensitive_directories)

🔗 References

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