CVE-2025-20805
📋 TL;DR
This CVE describes a use-after-free vulnerability in dpe (likely a MediaTek component) that could lead to memory corruption. An attacker with System privilege could exploit this to escalate privileges locally without 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-level access, potentially allowing complete system compromise, data theft, or persistence mechanisms.
Likely Case
Local privilege escalation allowing an attacker with initial System access to gain higher privileges, potentially compromising other processes or system integrity.
If Mitigated
Limited impact if proper privilege separation and exploit mitigations (ASLR, DEP) are in place, though successful exploitation could still lead to privilege escalation.
🎯 Exploit Status
Exploitation requires initial System privilege and knowledge of memory layout. Use-after-free vulnerabilities typically require precise timing and memory manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS10114696
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/January-2026
Restart Required: Yes
Instructions:
1. Check device manufacturer for firmware updates. 2. Apply MediaTek patch ALPS10114696. 3. Reboot device after patch installation. 4. Verify patch application through version checks.
🔧 Temporary Workarounds
Restrict System Privilege Access
allLimit access to System privilege to reduce attack surface for initial compromise.
Enable Exploit Mitigations
linuxEnsure ASLR, DEP, and other memory protection mechanisms are enabled.
echo 2 > /proc/sys/kernel/randomize_va_space
🧯 If You Can't Patch
- Implement strict access controls to prevent unauthorized users from obtaining System privilege
- Monitor for suspicious privilege escalation attempts and system behavior anomalies
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against MediaTek security bulletins or contact device manufacturer for vulnerability status.Check Version:
Check device settings > About phone > Build number or use manufacturer-specific commandsVerify Fix Applied:
Verify patch ALPS10114696 is applied through firmware version checks or device manufacturer verification tools.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Kernel panic or crash logs related to memory corruption
- Suspicious process behavior with elevated privileges
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
EventID=4688 AND NewProcessName CONTAINS 'system' AND ParentProcessName NOT IN ('expected_parents')