CVE-2026-108504: ZTE Z80 Ultra Information Disclosure Flaw

CVE-2026-108504 is an information disclosure vulnerability in ZTE Z80 Ultra caused by insufficient access control in framework methods. Attackers can exploit this flaw to read sensitive device information. This article covers technical details, affected versions, impact assessment, and mitigation strategies.

CVE-2026-108504 Overview

CVE-2026-108504 is an information disclosure vulnerability affecting the ZTE Z80 Ultra smartphone. The flaw stems from insufficient access control on methods within the device framework. A local attacker can invoke these methods to read device-related information without proper authorization.

The vulnerability is classified under [CWE-269] Improper Privilege Management. Exploitation requires local access and user interaction, limiting remote abuse. However, successful exploitation exposes sensitive device information that attackers can leverage for follow-on attacks or device fingerprinting.

Critical Impact
A local application without special permissions can read device-related information by invoking inadequately protected framework methods on the ZTE Z80 Ultra.

Affected Products

ZTE Z80 Ultra smartphone
ZTE Z80 Ultra device framework (affected methods)
Specific firmware versions: Refer to the vendor advisory

Discovery Timeline

2026-10-10 - CVE-2026-108504 published to NVD
2026-10-13 - Last updated in NVD database

Technical Details for CVE-2026-108504

Vulnerability Analysis

The vulnerability resides in the device framework shipped with the ZTE Z80 Ultra. Framework methods that return device-related information lack sufficient access control checks. An attacker running a local, unprivileged application on the device can call these methods and retrieve data that should be restricted to privileged system components.

The disclosed information can include hardware identifiers, configuration data, or other device-specific metadata. Attackers can use this data to profile the device, track users, or build targeted secondary attacks. The flaw does not allow write access or service disruption, confining impact to confidentiality.

Exploitation requires user interaction, such as installing or launching a malicious application. The attack surface is limited to processes already running on the device.

Root Cause

The root cause is improper privilege management ([CWE-269]) in the framework layer. Methods that expose device information do not verify the caller's privilege level before returning data. The framework trusts invocation without enforcing permission checks or signature-based access control.

Attack Vector

A local attacker delivers a crafted application to the target device. Once the user installs and runs the application, it invokes the vulnerable framework methods. The methods return device-related information to the calling process, which the attacker can exfiltrate through standard network channels.

For technical details, refer to the ZTE Security Bulletin.

Detection Methods for CVE-2026-108504

Indicators of Compromise

Installation of unknown or sideloaded applications on the ZTE Z80 Ultra outside of trusted app stores.
Applications requesting broad framework access or invoking undocumented system methods.
Outbound network traffic from untrusted apps containing device identifiers or configuration data.

Detection Strategies

Audit installed applications for those invoking privileged framework APIs without matching declared permissions.
Monitor application behavior for reads of device metadata followed by network transmission.
Review mobile device management (MDM) telemetry for policy violations on ZTE Z80 Ultra fleet devices.

Monitoring Recommendations

Enroll ZTE Z80 Ultra devices in an MDM solution to collect installed-app inventories and runtime telemetry.
Alert on apps from unknown publishers or installed from non-official sources.
Track outbound connections from mobile endpoints for anomalous data transfer patterns.

How to Mitigate CVE-2026-108504

Immediate Actions Required

Apply the vendor firmware update from the ZTE Security Bulletin as soon as it is available for your region.
Restrict installation of applications to official app stores and block sideloading on managed devices.
Review installed applications on affected devices and remove untrusted or unused apps.

Patch Information

ZTE has published a security bulletin addressing CVE-2026-108504. Device owners and fleet administrators should consult the ZTE Security Bulletin for the fixed firmware versions and update instructions for the ZTE Z80 Ultra.

Workarounds

Enforce an MDM policy that prohibits installation of apps from unknown sources on ZTE Z80 Ultra devices.
Educate users to avoid installing applications outside of trusted distribution channels.
Segment mobile devices on isolated network zones to limit the impact of leaked device information.

bash

# Example MDM policy enforcement concept
# Disable installation from unknown sources on managed Android devices
adb shell settings put global install_non_market_apps 0
adb shell settings put secure install_non_market_apps 0