MediaTek geniezone Privilege Escalation and Info Disclosure

Local privilege escalation in MediaTek's geniezone Trusted Execution Environment component affects 17 Android chipsets through a use-after-free memory corruption flaw. Exploitation requires an attacker who has already obtained System-level privilege on the device, allowing them to escalate further - potentially to kernel or TEE privilege - with full confidentiality, integrity, and availability impact. No public exploit code or active exploitation has been identified at time of analysis; the September 2026 MediaTek security bulletin addresses this with Patch ID ALPS10900510.

Local information disclosure in MediaTek's GeniZone trusted execution environment component allows a System-privileged attacker to read out-of-bounds memory due to a missing bounds check (CWE-125), potentially leaking confidential data from the TEE. The flaw affects seventeen MediaTek chipsets documented in the September 2026 security bulletin, and patches are available under IDs ALPS10867524 and ALPS10876355. No public exploit code or active exploitation has been identified at time of analysis, and SSVC assessment rates exploitation status as none.