CVE-2025-20696
📋 TL;DR
This CVE describes an out-of-bounds write vulnerability in DA (likely a MediaTek component) that could allow local privilege escalation. Attackers with physical access can exploit this without additional privileges, though user interaction is required. Devices using affected MediaTek chipsets are vulnerable.
💻 Affected Systems
- MediaTek DA component (exact product names unspecified)
📦 What is this software?
Android by Google
Android by Google
Android by Google
Openwrt by Openwrt
Openwrt by Openwrt
Rdk B by Rdkcentral
Yocto by Linuxfoundation
Zephyr by Zephyrproject
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with root/system privileges, allowing complete control over the device and data.
Likely Case
Local privilege escalation to gain elevated permissions on the device, potentially enabling further attacks.
If Mitigated
Limited impact if physical access controls prevent unauthorized device handling and user interaction is restricted.
🎯 Exploit Status
Exploitation requires physical access and user interaction, making it less likely for widespread attacks but dangerous for targeted scenarios.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS09915215
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/August-2025
Restart Required: No
Instructions:
1. Check device manufacturer for firmware updates. 2. Apply the patch referenced in MediaTek's security bulletin. 3. Verify patch installation via system logs or version checks.
🔧 Temporary Workarounds
Restrict Physical Access
allLimit physical access to devices to prevent exploitation.
User Awareness
allEducate users to avoid interacting with unknown prompts or physical device access by untrusted individuals.
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data.
- Implement strict physical security controls and monitor for unauthorized access.
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against MediaTek's patched versions; review system logs for DA component errors.Check Version:
Varies by device; typically 'getprop ro.build.fingerprint' or similar on Android devices.Verify Fix Applied:
Confirm patch ALPS09915215 is applied via firmware update logs or vendor-specific verification tools.📡 Detection & Monitoring
Log Indicators:
- Unusual DA component crashes or privilege escalation attempts in system logs.
Network Indicators:
- None - local exploitation only.
SIEM Query:
Search for events related to DA process anomalies or unexpected privilege changes on MediaTek devices.