Xiaomi 18 Pro

Xiaomi 18 Pro
Security Grade A- Calculator v1	Xiaomi 18 Pro Brand: Xiaomi (Parent: Xiaomi Corporation) Category: Smartphone • Model / Gen: Xiaomi 18 series (Pro tier) M154FF Release Date: 2026-09-23 • Status: In sale Classification Date: 2026-10-27 • Official Website

Security Evaluation

1. Device Security

Criterion	Value	Proof	Comment
Known hardware tampering	Very common	(lines 5–10, 24–28) https://www.mundoxiaomi.com/ (Oct 7, 2026 report) 🔗 Proof	This is the defining security characteristic. Developers including @realMlgmXyysd publicly demonstrated a bootloader unlock on the Xiaomi 18 Pro weeks after launch, without using Xiaomi’s official procedure. The method reportedly exploits a security vulnerability that has not been described in detail. Screenshots of unlocked devices were published as proof. Xiaomi has not changed its official unlock policy; the bypass is vulnerability-based, not a policy reversal.
Known vulnerabilities	Very common	(lines 25–29) 🔗 Proof	The bootloader bypass is explicitly described as exploiting a security vulnerability, not a legitimate unlock path. The vulnerability is currently unpatched as of the classification date (2026-10-24). Xiaomi is expected to fix the exploited vulnerability in a future HyperOS update, and it is not certain the technique will work on all firmware versions. This is a live, publicly documented, unpatched security bypass on a device less than one month old.
Prior attacks	None	[No public incident reports identified 🔗 Proof]	No public report of malicious in-the-wild exploitation of this bootloader-unlock vulnerability against Xiaomi 18 Pro users. The disclosure is a developer/security-research achievement, not an active attack campaign.
Updatability	Very common	(lines 6–12) 🔗 Proof	Xiaomi has promised 4 major Android OS generations: Android 18, Android 19, Android 20, and Android 21. The device ships with Android 17 and will eventually receive Android 21 as its final OS update. This is a multi-year, multi-generation commitment comparable to or exceeding most Android flagship peers.
Category Score	Score: 2 / 3

2. System Security

Criterion	Value	Proof	Comment
Authentication with other systems	Partial	🔗 Proof	Full Xiaomi ecosystem authentication and standard Android authentication. Unified SSO across third-party enterprise identity providers (Microsoft, Google Workspace, enterprise IdPs) is not a native “Full” capability on HyperOS 4.
Communications	Encrypted with up-to-date encryption	🔗 Proof	Android 17 / HyperOS 4 enforces modern TLS/HTTPS and Wi-Fi encryption (WPA2/WPA3) at the OS level. Xiaomi’s product page does not separately list cryptographic protocol versions; this rating relies on the Android 17 default security stack.
Storage	Encrypted with up-to-date encryption	🔗 Proof	Android 17 mandates File-Based Encryption (FBE) for user data. The Xiaomi 18 Pro ships with Android 17, so the mandatory FBE baseline applies by default.
Category Score	Score: 2 / 3

3. User Authentication

Criterion	Value	Proof	Comment
Account management	Full	🔗 Proof	Full Xiaomi Account lifecycle: login, cloud sync, Find Device, multi-device ecosystem management, and remote administration.
Authentication	Secure	(lines 3–4) https://mobilebuzzbd.com/product/xiaomi-18-pro/ (lines 21–22) 🔗 Proof	The device features a 3D ultrasonic under-display fingerprint sensor and supports facial recognition. Ultrasonic fingerprint is a strong biometric authenticator resistant to 2D spoofing, placing the device in the “Secure” tier.
Brute-force protection	Exist	🔗 Proof	Android 17 provides OS-level rate limiting and lockout for lock-screen authentication and account login. HyperOS 4 inherits these protections, including escalating delays after repeated failed biometric or PIN attempts.
Event logging	Access event logged	🔗 Proof	Android / HyperOS records access events including lock-screen attempts, account login history, and app permission-access logs. A user-accessible security log satisfies “Access event logged.”
Passwords	Require change after setup with complexity requirements	[Xiaomi account setup flow 🔗 Proof]	During Xiaomi Account setup, the system enforces password-complexity requirements. Periodic password-change prompts and security notifications are part of the account security framework.
Category Score	Score: 1 / 3

Technical Specifications

Property	Details
Operating System & App	HyperOS 4, based on Android 17 (Companion App: Xiaomi Home / Mi Fitness)
Hardware (CPU / GPU)	CPU: Qualcomm Snapdragon 8 Elite Gen 6 (TSMC 2 nm), octa-core, up to 5 GHz • GPU: Adreno (integrated in Snapdragon 8 Elite Gen 6)
Memory & Storage	Memory: 12 GB / 16 GB LPDDR5X • Storage: 256 GB / 512 GB / 1 TB UFS 4.1; no microSD expansion
Power, Battery & Charging	Battery: 7,000 mAh Silicon-Carbon (Xiaomi Jinshajiang battery) • Power: 100 W wired, 50 W wireless, 27 W reverse wireless • Charging: 100 W wired / 50 W wireless
Display & Camera	Display: 6.4-inch LTPO AMOLED, 2436 × 1120, 120 Hz, 4000 nits peak, 2160 Hz PWM dimming, Dolby Vision / HDR10+ / BT.2020, Xiaomi Dragon Crystal Glass 3, hardware-level Privacy Displayecondary Display 2.7-inch LTPO AMOLED, 912 × 596, 120 Hz, 4000 nits peak, on the rear camera module • Camera: Rear: 200 MP f/1.7 main (1/1.28″, OIS) + 200 MP f/2.4 periscope telephoto (3.2× optical, OIS) + 50 MP f/2.4 ultra-wide (102°); Front: 50 MP f/2.2
Sound & Connectivity	Sound: Stereo speakers, Dolby Atmos, Hi-Res Audio, Snapdragon Sound** • Connectivity: Wi-Fi 7 (dual-band), Bluetooth 6.0, NFC, Infrared blaster, UWB, USB Type-C 3.2 with DisplayPort, IP68 (up to 6 m for 30 min)
Physical (Dimensions & Mass)	Dimensions: 151.8 × 72 × 8.5 mm (glass fiber back: 8.46 mm; glass back: 8.56 mm) • Mass: 203 g (glass fiber back); 208 g (glass back)

Classification target is Xiaomi 18 Pro (Sept 2026). The decisive security event is the publicly demonstrated bootloader unlock by @realMlgmXyysd and others weeks after launch, achieved without Xiaomi’s official procedure and reportedly exploiting an unpatched security vulnerability. Xiaomi is expected to patch the flaw in a future HyperOS update, but as of the classification date, the bypass is live and publicly documented. Updatability = Very common reflects Xiaomi’s commitment to 4 major Android generations (up to Android 21). Authentication = Secure is supported by the 3D ultrasonic fingerprint sensor. The device also features a hardware-level Privacy Display and a 2.7-inch rear display, but these are usability/privacy features rather than security classification factors.