CVE-2025-20640
📋 TL;DR
This vulnerability in MediaTek DA software allows an attacker with physical access to read memory beyond intended boundaries, potentially exposing sensitive information. It requires user interaction to exploit and affects devices using vulnerable MediaTek components. The risk is limited to local information disclosure.
💻 Affected Systems
- MediaTek DA (Download Agent) software
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Attacker with physical access could read sensitive memory contents like encryption keys, passwords, or other device secrets, leading to complete device compromise.
Likely Case
Limited information disclosure of adjacent memory regions, potentially exposing non-critical system data or application information.
If Mitigated
With proper physical security controls, the vulnerability cannot be exploited as physical access is required.
🎯 Exploit Status
Requires physical access and user interaction. Exploitation involves triggering the out-of-bounds read through specific user actions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS09291146
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/February-2025
Restart Required: Yes
Instructions:
1. Check device manufacturer for firmware updates. 2. Apply MediaTek-provided patch ALPS09291146. 3. Reboot device after patch installation. 4. Verify patch application through version checking.
🔧 Temporary Workarounds
Physical Security Controls
allImplement strict physical access controls to prevent unauthorized device access
User Awareness
allEducate users about not allowing untrusted physical access to devices
🧯 If You Can't Patch
- Implement strict physical security controls and device tracking
- Limit sensitive data storage on affected devices and use full disk encryption
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against manufacturer's patched versions. Look for MediaTek DA software version information.Check Version:
Device-specific commands vary by manufacturer. Typically: Settings > About Phone > Build Number or through adb shell getprop ro.build.fingerprintVerify Fix Applied:
Verify patch ALPS09291146 is applied through device firmware version or security patch level.📡 Detection & Monitoring
Log Indicators:
- Unusual physical access events
- DA software crash logs
- Memory access violation logs
Network Indicators:
- Not applicable - local vulnerability only
SIEM Query:
Not applicable for network detection. Focus on physical access logs and device integrity monitoring.