By accessing unencrypted information in the device firmware, an attacker can obtain the initial login credentials for the device's web interface.

The ZTE Smart Life app contains an SQL injection vulnerability that allows attackers to execute UNION SELECT statements to query sensitive data in the feedback.db database across tables, including user accounts, phone numbers, feedback content, and local debug log paths, thereby enabling the theft of local privacy data.

The Activity zte.com.cn.filer/zte.com.cn.filer.FilePreViewActivity within ZTE File Manager is designed to preview compressed files. Third-party applications can launch this Activity and supply arbitrary file paths (e.g., content://zte.com.cn.filer.fileprovider/rootpath), enabling file access with the privilege level of ZTE File Manager. This allows unrooted devices to read files under certain system directories such as /data/data and /data/local/tmp. If access restrictions do not block untrusted applications, additional directories may also be accessible.

Access control failure means that an application does not effectively check user access permissions, so that unauthorized users can access system data beyond their permissions, such as viewing and modifying configuration information.

Cross-site request forgery (CSRF) vulnerabilities allow attackers to exploit a user's authenticated session to forge cross-site requests, inducing the execution of unintended operations such as tampering with configuration data.

An insecure password scheme refers to vulnerabilities arising from improper selection of encryption algorithms, inadequate key management, or flawed code implementation, which may lead to data leakage or tampering, such as hard-coded keys or the use of weak encryption algorithms.

Attackers carefully craft malicious scripts, such as JavaScript, and inject them into target systems; when other users access pages containing such malicious content, the scripts are automatically loaded and executed in the victim's browser.Attackers can thereby steal user cookies, hijack session privileges, and tamper with page content.Since the malicious code is stored within the system, the attack scope is broad and the concealment is strong, making it frequently employed for data theft attacks.

This vulnerability stems from a business logic flaw.Attackers can exploit legitimate application functions in unintended and abnormal ways, deviating from the designer's expectations, to carry out malicious attacks.

Disclosure/write-up for CVE-2021-21735 affecting the ZTE ZXHN H168N V3.5.

The issue is cataloged as information disclosure, but the useful part is the authorization failure: wizard handlers under the setup surface exposed PPPoE and WLAN material that should have required authenticated configuration access. Firmware analysis points to a brittle whitelist decision around the QuickSetup flow, including routes such as wizardpppoelua.lua and wizardwlanconfiglua.lua.

The write-up keeps secrets redacted and focuses on the route behavior, firmware logic, deployment-dependent admin compromise path, disclosure timeline, and the ZTE Low vs NVD Medium severity split.

I published a write-up on CVE-2021-21735 in the ZTE ZXHN H168N V3.5.

The bug was treated as an information disclosure, but the exposed data was not harmless telemetry. Wizard routes leaked PPPoE and WLAN material, and in some ISP deployments the PPPoE identifier could map into the hidden admin credential model. That changes the practical impact from “data leak” to possible router admin compromise and Wi-Fi compromise.

The write-up walks through the redacted evidence, firmware routing logic, affected/fixed versions, disclosure timeline, and why the ZTE 3.5 Low rating and NVD 6.5 Medium rating tell different stories.

There is an an information disclosure vulnerability in ZTE MU5250. Due to improper configuration of the access control mechanism, attackers can obtain information without authorization, causing the risk of information disclosure.

CVE-2026-34474 covers a pre-auth credential disclosure in ZTE ZXHN H298A 1.1 and H108N 2.6 router web interfaces.

The short version: an ETHCheat branch returns credential-bearing HTML before authentication. The captured fields include the admin password, WLAN PSK, and ESSID, and a companion wizard endpoint exposes serial data. The writeup keeps the PoC output redacted and focuses on the response behavior, affected scope, and disclosure trail.

Write-up for CVE-2026-34474. The affected ZTE H298A / H108N router builds return sensitive config values from an ETHCheat path before login.

On the tested targets, the response exposed admin and WLAN-related fields directly in the returned HTML, with a separate wizard path exposing serial data. ZTE treated the products as discontinued / out of scope, so the writeup documents the behavior, affected builds, impact, and disclosure timeline.

I published a technical analysis of CVE-2026-34472, a pre-authentication credential exposure and authentication bypass in the ZTE H188A V6 router.

Root cause: a routing flaw allows unauthenticated access to logic intended for the pre-login setup wizard. The exposed flow returns sensitive configuration values, including WLAN and admin-related credentials, which can then be used to cross the authentication boundary.

The writeup includes:

affected component analysis decompiled firmware review Lua/CGILua control-flow notes disclosure timeline PoC repository

I published a writeup on a vulnerability in the ZTE H188A V6 where a routing flaw exposes the pre-login wizard to unauthenticated requests. That flow returns sensitive configuration data, including Wi-Fi and admin-related credentials, allowing an attacker to cross the authentication boundary and access the management interface.

What the post includes:

root-cause analysis from decompiled firmware Lua / CGILua routing notes disclosure timeline PoC repo

Disclosure: this is my own research/writeup.

I reported this ZTE H-series router DoS in 2024; it is now public as CVE-2026-34473.

The writeup focuses on the root cause rather than just the symptom. The issue is not simply “large POST body kills the UI.” Firmware analysis maps the behavior to CGILua request-body parsing: attacker-controlled application/x-www-form-urlencoded POST data reaches body handling before login enforcement matters.

The article includes validation footage, affected-model context, disclosure timeline, decompiled parser evidence, and reconstructed public-safe code-path notes.

Interested in feedback on the root-cause framing from people who review embedded web stacks or router firmware.

open for collabs too.

A pre-auth oversized application/x-www-form-urlencoded POST can drive the router web interface into denial of service. The root cause sits in the request-body handling path: attacker-controlled POST data reaches the CGILua parser before authentication, and the parser eagerly reads and processes request bodies that are still within the configured application-level input budget.

There is an unauthorized access vulnerability in ZTE MU5250. Due to improper permission control of the Web interface, an unauthorized attacker can  modify configuration through the interface.

A remote denial-of-service vulnerability exists in the ZTE Cloud PC client uSmartview, which may lead to memory corruption and remote denial of service.

ZTE Cloud PC client uSmartView contains a DLL hijacking vulnerability; since uSmartViewServiceAgent.exe runs with SYSTEM privileges, successful hijacking enables local arbitrary code execution, privilege escalation, and memory corruption.contains a DLL hijacking vulnerability; since uSmartViewServiceAgent.exe runs with SYSTEM privileges, successful hijacking enables local arbitrary code execution, privilege escalation, and memory corruption.

There exists an openssl.cnf privilege escalation vulnerability in ZTE Cloud PC client uSmartview. An attacker can execute arbitrary code locally and escalate privileges.

ZTE ZX297520V3 BootROM contains a vulnerability that allows arbitrary memory writes via USB. Attackers can exploit the lack of target address validation in the USB download mode to write data to any location in BootROM runtime memory, thereby overwriting the stack, hijacking the execution flow, bypassing the Secure Boot signature verification mechanism, and achieving unauthorized code execution.

There is a local privilege escalation vulnerability in the ZTE PROCESS Guard service of the cloud computer client, which may allow local arbitrary code execution, privilege escalation and path traversal bypass.

Sensitive data exposure leading to admin/WLAN credential leak in ZTE ZXHN H298A 1.1 and H108N 2.6. A crafted request to the router web interface can expose sensitive device and account information. In affected builds, the response may include the administrator password and WLAN PSK, enabling authentication bypass and network compromise. Some firmware versions may expose only partial identifiers (e.g., serial number, ESSID, MAC addresses).

Unauthenticated DoS in ZTE H8102E, H168N, H167A, H199A, H288A, H198A, H267A, H267N, H268A, H388X, H196A, H369A, H268N, H208N, H367N, H181A, and H196Q. A denial-of-service condition can be triggered against the router's web interface by sending an oversized application/x-www-form-urlencoded POST body. After triggering, the management interface may become unresponsive until the device is rebooted. This may affect any firmware version prior to 2022 (reporter observation). The supplier stated that devices are not vulnerable since 2021-03-23; operator firmware may vary.

Red Magic 11 Pro (NX809J) contains a vulnerability that allows non-privileged applications to trigger sensitive operations. The vulnerability stems from the lack of validation for applications accessing the service interface. Exploiting this vulnerability, an attacker can write files to specific partitions and set writable system properties.

The ZTE ZXEDM iEMS product has a password reset vulnerability for any user.Because the management of the cloud EMS portal does not properly control access to the user list acquisition function, attackers can read all user list information through the user list interface. Attackers can reset the passwords of obtained user information, causing risks such as unauthorized operations.

Unauthenticated credential disclosure in the wizard interface in ZTE ZXHN H188A V6.0.10P2TE and V6.0.10P3N3TE allows unauthenticated attackers on the local network to retrieve sensitive credentials from the router's web management interface, including the default administrator password, WLAN PSK, and PPPoE credentials. In some observed cases, configuration changes may also be performed without authentication.

There is a configuration defect vulnerability in the version server of ZTE MF258K Pro products. Due to improper directory permission settings, an attacker can execute write permissions in a specific directory.

Improper Privilege Management vulnerability in ZTE ElasticNet UME R32 on Linux allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects ElasticNet UME R32: ElasticNetUMER32V16.23.20.04.