CVE-2026-20605
📋 TL;DR
This memory handling vulnerability in Apple operating systems allows malicious applications to crash system processes. It affects macOS, iOS, and iPadOS users running vulnerable versions. The issue has been addressed in recent updates.
💻 Affected Systems
- macOS
- iOS
- iPadOS
📦 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 →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
A malicious app could cause denial of service by crashing critical system processes, potentially leading to system instability or temporary unavailability.
Likely Case
Malicious apps could cause targeted system process crashes, disrupting specific functionality without full system compromise.
If Mitigated
With proper app sandboxing and security controls, impact is limited to isolated process crashes without privilege escalation.
🎯 Exploit Status
Exploitation requires a malicious app to be installed and executed on the target system. No remote exploitation without user interaction.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Sequoia 15.7.4, iOS 18.7.5 and iPadOS 18.7.5, macOS Tahoe 26.3, macOS Sonoma 14.8.4
Vendor Advisory: https://support.apple.com/en-us/126347
Restart Required: Yes
Instructions:
1. Open System Settings > General > Software Update. 2. Install available updates. 3. Restart device when prompted.
🔧 Temporary Workarounds
Restrict App Installation
allOnly install apps from trusted sources like the App Store to reduce risk of malicious apps.
🧯 If You Can't Patch
- Implement application allowlisting to restrict which apps can run
- Use mobile device management (MDM) to enforce security policies and app restrictions
🔍 How to Verify
Check if Vulnerable:
Check current OS version against affected versions listCheck Version:
macOS: sw_vers -productVersion, iOS/iPadOS: Settings > General > About > VersionVerify Fix Applied:
Verify OS version matches or exceeds patched versions📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes in system logs
- Kernel panic logs related to memory corruption
Network Indicators:
- No network indicators as this is local exploitation
SIEM Query:
source="system.log" AND ("panic" OR "crash" OR "segfault") AND process_name="system_process"