CVE-2025-43354
📋 TL;DR
A logging vulnerability in Apple operating systems allows applications to access sensitive user data that should have been redacted. This affects users running visionOS, tvOS, iOS, iPadOS, and watchOS versions before 26. The issue involves improper data handling in logging mechanisms.
💻 Affected Systems
- visionOS
- tvOS
- iOS
- iPadOS
- watchOS
📦 What is this software?
Ipados by Apple
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 →Tvos by Apple
Watchos by Apple
⚠️ Risk & Real-World Impact
Worst Case
Malicious applications could extract sensitive user information like credentials, personal data, or authentication tokens from system logs, leading to data breaches or account compromise.
Likely Case
Applications with legitimate access could inadvertently expose sensitive data in logs, potentially accessible to other apps or during debugging sessions.
If Mitigated
With proper app sandboxing and minimal logging enabled, exposure would be limited to non-critical data within controlled environments.
🎯 Exploit Status
Exploitation requires a malicious or compromised application to be installed on the device. The vulnerability is in logging data handling rather than remote code execution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: visionOS 26, tvOS 26, iOS 26, iPadOS 26, watchOS 26
Vendor Advisory: https://support.apple.com/en-us/125108
Restart Required: No
Instructions:
1. Open Settings app. 2. Navigate to General > Software Update. 3. Download and install the latest available update (version 26 or later). 4. Ensure the update completes successfully.
🔧 Temporary Workarounds
Disable Debug Logging
allReduce logging verbosity to minimize sensitive data exposure in logs
Restrict App Permissions
allReview and limit application permissions to only necessary access
🧯 If You Can't Patch
- Implement strict application vetting and only install trusted applications from official sources
- Enable device encryption and use strong passcodes to protect data at rest
🔍 How to Verify
Check if Vulnerable:
Check device version in Settings > General > About > Software Version. If version is below 26, the device is vulnerable.Check Version:
Settings > General > About > Software Version (iOS/iPadOS/watchOS) or System > About (visionOS/tvOS)Verify Fix Applied:
After updating, verify Software Version shows 26 or higher in Settings > General > About.📡 Detection & Monitoring
Log Indicators:
- Unusual application access to system logs
- Log entries containing sensitive data patterns (credentials, tokens, PII)
Network Indicators:
- Unusual data exfiltration from applications to external servers
SIEM Query:
Search for applications accessing system log files or unusual log read operations on Apple devices🔗 References
- https://support.apple.com/en-us/125108
- https://support.apple.com/en-us/125114
- https://support.apple.com/en-us/125115
- https://support.apple.com/en-us/125116
- http://seclists.org/fulldisclosure/2025/Sep/49
- http://seclists.org/fulldisclosure/2025/Sep/53
- http://seclists.org/fulldisclosure/2025/Sep/56
- http://seclists.org/fulldisclosure/2025/Sep/57
- http://seclists.org/fulldisclosure/2025/Sep/58
