CVE-2025-43383
📋 TL;DR
This CVE describes an out-of-bounds memory access vulnerability in Apple's media file processing. Attackers can craft malicious media files that cause affected applications to crash or corrupt memory when processed. Users of Apple devices running vulnerable versions of tvOS, macOS, iOS, iPadOS, and visionOS are affected.
💻 Affected Systems
- tvOS
- macOS
- iOS
- iPadOS
- visionOS
📦 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
⚠️ Risk & Real-World Impact
Worst Case
Potential arbitrary code execution leading to full system compromise if memory corruption can be controlled precisely.
Likely Case
Application crashes (denial of service) and potential memory corruption leading to unstable system behavior.
If Mitigated
Limited to application crashes with no privilege escalation if proper sandboxing and memory protections are active.
🎯 Exploit Status
Exploitation requires user interaction to open malicious media file. Memory corruption exploitation typically requires specific conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: tvOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Sequoia 15.7.2, visionOS 26.1
Vendor Advisory: https://support.apple.com/en-us/125632
Restart Required: Yes
Instructions:
1. Open Settings app. 2. Navigate to General > Software Update. 3. Download and install available updates. 4. Restart device when prompted.
🔧 Temporary Workarounds
Disable automatic media file processing
allConfigure applications to not automatically open or preview media files from untrusted sources.
Use application sandboxing
allEnsure media processing applications run with minimal privileges using built-in sandboxing features.
🧯 If You Can't Patch
- Implement strict file type filtering to block suspicious media files at network perimeter.
- Educate users to avoid opening media files from untrusted sources and use alternative media players.
🔍 How to Verify
Check if Vulnerable:
Check current OS version against affected versions list. On Apple devices: Settings > General > About > Software Version.Check Version:
On macOS: sw_vers -productVersion. On iOS/iPadOS: Check Settings > General > About > Version.Verify Fix Applied:
Verify OS version matches or exceeds patched versions listed in fix_official.patch_version.📡 Detection & Monitoring
Log Indicators:
- Application crash logs related to media processing
- Memory access violation errors in system logs
- Unexpected process termination of media-related apps
Network Indicators:
- Unusual media file downloads from untrusted sources
- Multiple media file processing failures
SIEM Query:
source="apple_system_logs" AND (event="crash" OR event="memory_access") AND process="*media*"