CVE-2025-47366

SoC Vendor · Trusted Zone (TEE)

A cryptographic issue occurs when a Trusted Zone with outdated code is triggered by a High-Level Operating System (HLOS) providing incorrect input.

Executive summary

A cryptographic flaw in the Trusted Zone environment allows for security bypasses when triggered by malformed input from the host operating system.

Vulnerability

This vulnerability involves a cryptographic failure within the Trusted Execution Environment (TEE). It occurs when the "Trusted Zone" processes "incorrect input" from the High-Level Operating System (HLOS). This could allow an attacker with OS-level privileges to break the isolation between the secure and non-secure worlds.

Business impact

The Trusted Zone is responsible for handling sensitive tasks like disk encryption keys and biometric data. A CVSS score of 7.1 indicates a High severity, as a successful exploit could lead to the compromise of the device's "root of trust" and the theft of highly sensitive cryptographic material.

Remediation

Immediate Action: Apply the system-level security updates (typically delivered via Android or OEM security patches) to update the Trusted Zone firmware.

Proactive Monitoring: While difficult to monitor at the TEE level, security teams should watch for unauthorized attempts to access secure storage or kernel-level anomalies.

Compensating Controls: Ensure that the device bootloader is locked and that verified boot mechanisms are active to prevent the loading of unauthorized HLOS components.

Exploitation status

Public Exploit Available: false

Analyst recommendation

Vulnerabilities in the TEE are critical because they undermine the hardware-level security of the device. Users and administrators must apply the latest OEM security patches immediately to ensure the integrity of the Trusted Zone.