CVE-2017-8142: Huawei Mate 9 Firmware

High severity, CVSS 7.8. EPSS: 1.1% chance of exploitation in the next 30 days.

The Trusted Execution Environment (TEE) module driver of Mate 9 and Mate 9 Pro smart phones with software versions earlier than MHA-AL00BC00B221 and versions earlier than LON-AL00BC00B221 has a use after free (UAF) vulnerability. An attacker tricks a user into installing a malicious application, and the application can start multiple threads and try to create and free specific memory, which could triggers access memory after free it and causes a system crash or arbitrary code execution.

Affected products

• Huawei Mate 9 Firmware: before mha-al00bc00b221 (fixed in mha-al00bc00b221)
• Huawei Mate 9 Pro Firmware: before lon-al00bc00b221 (fixed in lon-al00bc00b221)

Published 2017-11-22. Last modified 2026-06-17.