CVE-2025-43270
📋 TL;DR
This CVE describes a sandbox escape vulnerability in macOS that allows malicious applications to bypass Local Network access restrictions. An attacker could exploit this to access network services and devices on the local network without proper authorization. This affects macOS systems running vulnerable versions of Sequoia, Ventura, and Sonoma.
💻 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 →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 app gains unauthorized access to local network services, potentially leading to lateral movement, data exfiltration, or compromise of other devices on the network.
Likely Case
Malicious app accesses local network resources it shouldn't have permission to reach, potentially exposing sensitive services or data.
If Mitigated
With proper app vetting and network segmentation, impact is limited to isolated network segments.
🎯 Exploit Status
Exploitation requires user to install/run a malicious app. Public disclosure suggests exploit code may be available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Sequoia 15.6, macOS Ventura 13.7.7, macOS Sonoma 14.7.7
Vendor Advisory: https://support.apple.com/en-us/124149
Restart Required: Yes
Instructions:
1. Open System Settings > General > Software Update. 2. Install available updates. 3. Restart when prompted.
🔧 Temporary Workarounds
Restrict App Installation
allOnly install apps from trusted sources like the Mac App Store or identified developers.
Network Segmentation
allSegment local network to limit exposure of sensitive services.
🧯 If You Can't Patch
- Implement strict application allowlisting to prevent untrusted app execution
- Deploy network monitoring to detect unusual local network access patterns
🔍 How to Verify
Check if Vulnerable:
Check macOS version in System Settings > General > About. If version is Sequoia <15.6, Ventura <13.7.7, or Sonoma <14.7.7, system is vulnerable.Check Version:
sw_versVerify Fix Applied:
Verify macOS version is Sequoia 15.6, Ventura 13.7.7, or Sonoma 14.7.7 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual network connections from applications to local network services
- Sandbox violation logs
Network Indicators:
- Unexpected local network traffic from macOS applications
- Connections to local services from untrusted apps
SIEM Query:
source="macos" AND (event_type="network_connection" AND dest_ip=~"192.168.*|10.*|172.16.*" AND app NOT IN allowed_apps_list)