CVE-2025-43205
📋 TL;DR
This CVE describes an out-of-bounds memory access vulnerability in Apple operating systems that could allow an app to bypass Address Space Layout Randomization (ASLR). The vulnerability affects multiple Apple platforms including iOS, iPadOS, watchOS, tvOS, and visionOS. Successful exploitation could potentially lead to information disclosure or facilitate further attacks.
💻 Affected Systems
- iOS
- iPadOS
- watchOS
- tvOS
- visionOS
📦 What is this software?
Ipados by Apple
Tvos by Apple
Watchos by Apple
⚠️ Risk & Real-World Impact
Worst Case
An attacker could bypass ASLR protections, potentially enabling more reliable exploitation of memory corruption vulnerabilities, leading to arbitrary code execution or sensitive information disclosure.
Likely Case
Information disclosure through memory leaks, potentially revealing memory addresses that could aid in developing more sophisticated attacks against the system.
If Mitigated
With proper application sandboxing and security controls in place, the impact would be limited to information disclosure within the sandboxed environment.
🎯 Exploit Status
Exploitation requires a malicious app to be installed on the device. The vulnerability bypasses ASLR but additional vulnerabilities would be needed for full exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: iOS 18.4, iPadOS 18.4, watchOS 11.4, tvOS 18.4, visionOS 2.4
Vendor Advisory: https://support.apple.com/en-us/122371
Restart Required: Yes
Instructions:
1. Open Settings app. 2. Navigate to General > Software Update. 3. Download and install the available update. 4. Restart device when prompted.
🔧 Temporary Workarounds
Restrict App Installation
allOnly install apps from trusted sources like the official App Store and avoid sideloading or installing from untrusted sources.
🧯 If You Can't Patch
- Implement strict app installation policies to prevent installation of untrusted applications
- Use mobile device management (MDM) solutions to enforce security policies and monitor for suspicious app behavior
🔍 How to Verify
Check if Vulnerable:
Check device version in Settings > General > About > Software VersionCheck Version:
Settings > General > About > Software Version (no command line available on consumer Apple devices)Verify Fix Applied:
Verify device is running iOS 18.4+, iPadOS 18.4+, watchOS 11.4+, tvOS 18.4+, or visionOS 2.4+📡 Detection & Monitoring
Log Indicators:
- Unusual app behavior, unexpected memory access patterns, or crash reports indicating memory corruption
Network Indicators:
- No direct network indicators as this is a local vulnerability
SIEM Query:
Device logs showing installation of untrusted apps or apps with unusual memory access patterns