CVE-2025-20804
📋 TL;DR
This CVE describes a use-after-free memory corruption vulnerability in dpe (likely a MediaTek component). An attacker with System privilege could exploit this to escalate privileges locally, requiring user interaction. The vulnerability affects systems using MediaTek chipsets with the vulnerable dpe component.
💻 Affected Systems
- MediaTek devices with dpe component
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation to kernel/system-level access, potentially allowing complete system compromise.
Likely Case
Local privilege escalation from System to higher privileges, enabling installation of persistent malware or data theft.
If Mitigated
Limited impact if proper privilege separation and exploit mitigations are in place.
🎯 Exploit Status
Requires System privilege and user interaction. Memory corruption vulnerabilities can be challenging to exploit reliably.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS10198951
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/January-2026
Restart Required: Yes
Instructions:
1. Check MediaTek security bulletin for affected devices. 2. Apply patch ALPS10198951. 3. Reboot device. 4. Verify patch installation.
🔧 Temporary Workarounds
Restrict System Privilege Access
allLimit which applications/users have System privilege to reduce attack surface
🧯 If You Can't Patch
- Implement strict application whitelisting to prevent malicious apps from obtaining System privilege
- Deploy exploit mitigation technologies (ASLR, DEP, etc.) and monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against MediaTek security bulletin. Look for dpe component version in system logs.Check Version:
Device-specific commands vary. Check system settings or use 'getprop' on Android devices.Verify Fix Applied:
Verify patch ALPS10198951 is installed via system update logs or firmware version check.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation attempts
- dpe component crashes or memory errors
Network Indicators:
- None - local exploitation only
SIEM Query:
Search for dpe process crashes or privilege escalation events in system logs