CVE-2021-40010
📋 TL;DR
CVE-2021-40010 is a critical heap overflow vulnerability in Huawei's bone voice ID Trusted Application (TA) component. Successful exploitation could allow attackers to execute arbitrary code with high privileges. This affects Huawei smartphones running HarmonyOS and EMUI.
💻 Affected Systems
- Huawei smartphones with bone voice ID feature
📦 What is this software?
Emui by Huawei
Emui by Huawei
Emui by Huawei
Emui by Huawei
Emui by Huawei
Emui by Huawei
Harmonyos by Huawei
Magic Ui by Huawei
Magic Ui by Huawei
Magic Ui by Huawei
Magic Ui by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise with kernel-level privileges, allowing persistent malware installation, data theft, and complete control over the device.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive data and system functions.
If Mitigated
Limited impact if devices are patched and have proper security controls like verified boot and app sandboxing.
🎯 Exploit Status
Requires local access to the device. No public exploit code available as of knowledge cutoff.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HarmonyOS 2.0.0.230 and later, EMUI security patches from January 2022 onward
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2022/5/
Restart Required: Yes
Instructions:
1. Check for system updates in device Settings > System & updates > Software update. 2. Download and install available security updates. 3. Restart device after installation completes.
🔧 Temporary Workarounds
Disable bone voice ID
allTemporarily disable the vulnerable feature until patching is possible
Restrict physical access
allLimit who can physically access vulnerable devices
🧯 If You Can't Patch
- Isolate affected devices from critical networks and data
- Implement strict access controls and monitoring for vulnerable devices
🔍 How to Verify
Check if Vulnerable:
Check device OS version in Settings > About phone. If running HarmonyOS < 2.0.0.230 or EMUI without January 2022 security patches, device is vulnerable.Check Version:
No universal command - check via device Settings interfaceVerify Fix Applied:
Verify OS version shows HarmonyOS 2.0.0.230+ or EMUI with security patch level January 2022 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual TA (Trusted Application) access patterns
- Unexpected privilege escalation attempts
Network Indicators:
- Unusual outbound connections from mobile devices
SIEM Query:
Device logs showing TA access anomalies or privilege escalation events🔗 References
- https://consumer.huawei.com/en/support/bulletin/2022/5/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202201-0000001194056366
- https://consumer.huawei.com/en/support/bulletin/2022/5/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202201-0000001194056366
