Mt6789 Auth Bypass
Executive summary
A class of "MT6789 auth bypass" reports refers to an authentication bypass issue affecting devices using MediaTek's MT6789 (Dimensity 700 series) SoC or related firmware components. Exploitation typically lets an attacker bypass secure-boot or trusted execution environment (TEE) protections, enabling access to sensitive operations (e.g., unlocking bootloader, installing unsigned firmware, or accessing secure keys). Impact ranges from device compromise and persistent root to extraction of credentials and rollback of security controls.
4. What Makes MT6789 “Interesting” for Bypass?
- Dual-core BROM auth – It validates both the DA and the bootloader stage.
- Rollback protection – Even if you flash an older DA, BROM checks anti-rollback fuse.
- Use in popular phones (Xiaomi Redmi Note 11 series, Realme 9i, Samsung Galaxy A23) → high demand for unlocking/repair.
5. Rooting (Optional)
In some cases, rooting the device might be necessary or part of the bypass process. This involves: mt6789 auth bypass
- Using tools like Magisk for a systemless root.
Detection and indicators
- Unexpected changes to bootloader unlock state.
- Presence of non-signed boot images or altered preloader logs.
- Unrecognized fastboot/EMMC commands executed without authorization.
- Device showing root-level access or SELinux permissive after boot.
Detecting if Your Device is Vulnerable
End users (or forensic investigators) can test vulnerability without any special hardware: Executive summary A class of "MT6789 auth bypass"
- Download
mtkclientfrom GitHub. - Run:
python3 mtk printinfo - If the tool successfully reads the chip's
brom_versionandhw_code, your device is vulnerable.
Vulnerable firmware versions include almost all MT6789 devices with Preloader versions before 2024.02.01. Devices updated via OTA that include a hardware fuse blow (rare, only on very new units) will show SLA: Permanent Lock. Dual-core BROM auth – It validates both the