CVE-2025-48575
📋 TL;DR
This vulnerability allows local attackers to install arbitrary certificates on Android devices without proper permissions, enabling local privilege escalation. It affects Android devices with vulnerable versions of the CertInstaller component. No user interaction is required for exploitation.
💻 Affected Systems
- Android CertInstaller component
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full system control, can install malicious certificates to intercept encrypted traffic, and compromise device integrity.
Likely Case
Local attackers install unauthorized certificates to perform man-in-the-middle attacks against encrypted communications on the device.
If Mitigated
With proper security controls, impact is limited to certificate installation without broader system compromise.
🎯 Exploit Status
Exploitation requires local access but no additional privileges; likely to be exploited by malicious apps.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: December 2025 Android Security Patch or later
Vendor Advisory: https://source.android.com/security/bulletin/2025-12-01
Restart Required: Yes
Instructions:
1. Apply December 2025 Android Security Patch. 2. Update affected devices through system updates. 3. Verify patch installation in security settings.
🔧 Temporary Workarounds
Restrict app installation
androidOnly install apps from trusted sources like Google Play Store to reduce risk of malicious apps exploiting this vulnerability.
Disable unknown sources
androidDisable installation from unknown sources in Android security settings.
🧯 If You Can't Patch
- Monitor for suspicious certificate installations in device security logs
- Implement application allowlisting to prevent unauthorized app execution
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > Security > Security update. If before December 2025, device is vulnerable.Check Version:
Settings > About phone > Android version > Security patch levelVerify Fix Applied:
Verify security patch level shows December 2025 or later in device settings.📡 Detection & Monitoring
Log Indicators:
- Unexpected certificate installation events in system logs
- Unauthorized certificate authority additions
Network Indicators:
- Unexpected certificate validation failures
- SSL/TLS interception patterns
SIEM Query:
source="android_system" AND (event="certificate_install" OR event="ca_install") AND result="success"