CVE-2026-20680
📋 TL;DR
This CVE describes a macOS/iOS/iPadOS vulnerability where sandboxed applications can bypass security restrictions to access sensitive user data. The issue affects multiple Apple operating system versions and was addressed through additional restrictions on app state observability. Users running affected versions are vulnerable to data exposure from malicious apps.
💻 Affected Systems
- macOS
- iOS
- iPadOS
📦 What is this software?
Ipados by Apple
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
Malicious sandboxed app exfiltrates sensitive user data including passwords, financial information, personal documents, and authentication tokens.
Likely Case
Malicious app collects limited user data such as browsing history, contacts, or app-specific data within its sandbox scope.
If Mitigated
App Store review process catches malicious apps before distribution, and users only install trusted applications from official sources.
🎯 Exploit Status
Requires user to install malicious app from App Store or sideload. Exploit leverages sandbox escape to access data.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5, iPadOS 18.7.5, iOS 26.3, iPadOS 26.3
Vendor Advisory: https://support.apple.com/en-us/126346
Restart Required: No
Instructions:
1. Open Settings/System Preferences. 2. Navigate to Software Update. 3. Install available updates. 4. Verify installation by checking version.
🔧 Temporary Workarounds
Restrict App Installation
allOnly install apps from trusted sources and App Store. Disable sideloading.
Review App Permissions
allRegularly review and restrict app permissions in Privacy & Security settings.
🧯 If You Can't Patch
- Implement mobile device management (MDM) to control app installation and enforce security policies.
- Use application allowlisting to only permit trusted applications to run on devices.
🔍 How to Verify
Check if Vulnerable:
Check current OS version against affected versions list. If running older than patched versions, device is vulnerable.Check Version:
macOS: sw_vers -productVersion, iOS/iPadOS: Settings > General > About > VersionVerify Fix Applied:
Verify OS version matches or exceeds patched versions listed in fix_official.patch_version.📡 Detection & Monitoring
Log Indicators:
- Unusual app behavior logs
- Sandbox violation logs in Console.app
- Unexpected data access patterns
Network Indicators:
- Suspicious outbound connections from sandboxed apps
- Data exfiltration patterns
SIEM Query:
source="apple_sandbox" AND (event="violation" OR event="escape_attempt")