CVE-2025-26420
📋 TL;DR
This vulnerability in Android's permission management system allows attackers to trick users into granting incorrect permissions through permission overload. It enables local privilege escalation without requiring additional execution privileges or user interaction. All Android devices running vulnerable versions are affected.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise where attacker gains elevated permissions to access sensitive data, install malware, or perform unauthorized actions.
Likely Case
Limited privilege escalation allowing access to specific protected resources or functionality the user didn't intend to grant.
If Mitigated
No impact if patched; otherwise, risk depends on user's permission management habits and installed applications.
🎯 Exploit Status
Requires malicious app installation or physical access. No user interaction needed for exploitation once initial access is achieved.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security updates from May 2025 onward
Vendor Advisory: https://source.android.com/security/bulletin/2025-05-01
Restart Required: No
Instructions:
1. Check for Android system updates in Settings > System > System update. 2. Install the latest security update. 3. No restart required for permission framework updates.
🔧 Temporary Workarounds
Restrict app installations
allOnly install apps from trusted sources like Google Play Store and avoid sideloading unknown applications.
Review app permissions
allRegularly review and revoke unnecessary permissions from installed applications in Settings > Apps > [App Name] > Permissions.
🧯 If You Can't Patch
- Implement mobile device management (MDM) to control app installations and permissions
- Use Android's work profile to isolate business applications from personal apps
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version. If patch level is before May 2025, device may be vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows May 2025 or later in Settings > About phone > Android version.📡 Detection & Monitoring
Log Indicators:
- Unusual permission grant patterns in system logs
- Multiple permission requests from single app in short timeframe
Network Indicators:
- No network indicators - this is a local vulnerability
SIEM Query:
Not applicable for typical SIEM monitoring as this is a local device vulnerability