CVE-2026-108505 in Z80 Ultra
Summary
by MITRE • 10/10/2026
ZTE Z80 Ultra has a local information disclosure vulnerability. Third-party applications can capture data returned by system interfaces to obtain device-related information.
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Analysis
by VulDB Data Team • 10/10/2026
The identified security flaw in the ZTE Z80 Ultra represents a critical failure in operating system boundary enforcement, specifically categorized under CWE-200 as an Information Exposure vulnerability. This issue stems from improper access control mechanisms within the Android framework or specific native services exposed by the device manufacturer. In standard mobile architecture, sensitive system interfaces are designed to return data only to privileged applications or processes that have explicitly requested and been granted appropriate permissions through the manifest declaration process. However, in this instance, the implementation allows third-party applications with minimal privileges to intercept or capture responses from these internal APIs without triggering a permission denial error. This indicates a breakdown in the isolation model that typically separates user-space applications from core system services, allowing unauthorized entities to query device state information directly.
From an operational perspective, this vulnerability enables local attackers who have installed malicious software on the target device to gather detailed hardware and configuration data. The captured information may include unique identifiers such as IMEI numbers, serial numbers, MAC addresses, or details regarding connected peripherals and network interfaces. While the attack vector is strictly local requiring physical access or prior installation of malware, the implications are significant for privacy and potential downstream attacks. Attackers can use this aggregated device fingerprinting data to correlate user activity across different platforms, bypass security measures that rely on unique hardware identifiers, or prepare for more sophisticated exploits by understanding the specific software version and configuration state of the target device. This level of reconnaissance is often a precursor to targeted social engineering campaigns or further privilege escalation attempts where knowledge of the exact system build aids in finding compatible exploit code.
The technical root cause likely involves an oversight in how Android's Binder IPC mechanism handles requests for certain system properties. If specific service endpoints are exported without proper SELinux policies or permission checks, any application can bind to them and retrieve data as if it were a privileged process. This violates the principle of least privilege, which dictates that components should only have access to the resources necessary for their legitimate function. The lack of validation on the caller's identity allows untrusted code to masquerade as system-level processes when querying these interfaces. Such flaws are particularly dangerous in enterprise environments or personal devices where sensitive data is stored locally, as they erode trust in the integrity of the operating system's security model.
Mitigation strategies must focus on both immediate patching and long-term architectural improvements. The primary remediation involves a firmware update from ZTE that restricts access to these specific system interfaces by enforcing stricter permission checks within the Android framework or adjusting SELinux policies to deny unprivileged applications from binding to sensitive services. Developers should audit all exported IPC endpoints to ensure they verify caller permissions before returning data. For users unable to immediately apply patches, restricting app installation sources and utilizing mobile device management solutions that monitor for suspicious API calls can provide some level of protection. Furthermore, implementing runtime permission checks in custom system apps ensures that even if a vulnerability exists, the impact is limited by requiring explicit user consent or higher-level authorization before sensitive data is exposed. Regular security audits focusing on information leakage vectors are essential to prevent similar exposures in future releases.