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ZTE Z80 Ultra EUVDEUVD-2026-96228

| CVE-2026-108502 LOW
Improper Privilege Management (CWE-269)
2026-10-10 zte GHSA-7xw7-52f6-f4qf
3.3
CVSS 3.1 · Vendor: zte
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Trick user into installing app
  2. Exploit
    App hooks system APIs
  3. Execution
    Read restricted system information
  4. Impact
    Exfiltrate disclosed data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Least privilege enforcement
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires a malicious or over-reaching THIRD-PARTY APPLICATION to be installed on the ZTE Z80 Ultra device, which then hooks exposed system APIs to read information. The limiting factors are significant: the attack is local-only (AV:L) with no network path, the user must install the attacker's app (UI:R), and the disclosed data is limited (C:L) with no integrity or availability impact. There is no indication the flaw is reachable remotely or exploitable against a default, un-tampered device without first achieving app installation.

Impact

This is a low-severity, low-priority issue rather than a high-CVSS alarm - the provided CVSS 3.1 base score is only 3.3, and all signals point the same direction with no conflict. The vector (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N) confirms the attack is LOCAL, not network-reachable: a malicious third-party application must already be installed on the ZTE Z80 Ultra handset, and the impact is limited to partial confidentiality disclosure (C:L) with no integrity or availability effect. No EPSS probability is supplied, there is no CISA KEV listing, and no public exploit code is referenced, so there is no evidence of exploitation pressure. The CWE-269 (improper privilege management) classification is consistent with a rogue app hooking system APIs to read data it should not reach. The only mild tension is that the Tags include 'Privilege Escalation' while the described and scored impact is purely information disclosure with no privilege gain (I:N, S:U) - treat the escalation framing with caution and verify against the ZTE bulletin. Overall: a genuine but minor on-device privacy flaw, not an urgent remote threat.

Exploit ScenarioDerived

A user installs a malicious or over-privileged third-party app on a ZTE Z80 Ultra; the app hooks exposed system APIs and reads information it should not be able to access, leaking it off-device. No public exploit code is referenced, and exploitation requires the victim to install the attacker's app (UI:R), so impact is confined to the compromised handset.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 10, 2026

ZTE Z80 Ultra allows a malicious third-party application installed on the device to hook exposed system APIs and read limited sensitive information, resulting in a low-severity information disclosure (CVSS 3.1 base score 3.3). The attack is local-only, requires user interaction to install the attacking app, and requires no special privileges (PR:N), with only a low confidentiality impact and no integrity or availability impact; no public exploit identified at time of analysis and no confirmed active exploitation (CISA KEV).

RemediationAI

No vendor-released patch is identified in the provided data; consult the ZTE advisory at https://support.zte.com.cn/zte-iccp-isupport-webui/bulletin/detail/1450988451697172610 for updates and apply any patch as soon as it becomes available. As a compensating control, users should restrict app installation to trusted sources such as official app stores and avoid sideloading untrusted applications, since the attack requires a malicious app to be installed. Disabling developer options and USB debugging when not needed can reduce the risk of API hooking frameworks, though this may impact development or advanced use cases. Enterprise administrators can enforce app allowlisting via MDM to prevent installation of unauthorized applications. Monitor the vendor advisory for future security updates.

Affected VersionsENISA

Z80 Ultra GEN_ZTE_PQ85A01V1.0.0B27 and prior released versions

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability is classified as CWE-269 (Improper Privilege Management), meaning the ZTE Z80 Ultra's system fails to properly restrict or isolate access to its exposed APIs, allowing a third-party application to intercept or hook those APIs and read information it should not have access to. API hooking typically involves intercepting function calls at runtime, and on this mobile device platform, the flaw permits such hooking without sufficient privilege checks. The affected component is the Z80 Ultra device itself (CPE: cpe:2.3:a:zte:z80_ultra:*:*:*:*:*:*:*:*), and the attack vector is local (AV:L) with user interaction (UI:R) required to install the malicious app. The low confidentiality impact (C:L) reflects that the exposed information is limited, and there is no impact to integrity or availability. No specific system API or library is named in the advisory.

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Severity by source

Vendor (zte) PRIMARY 3.3 LOW
AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
vuln.today AI 3.3 LOW

Local vector because a resident app is required (AV:L); the app needs no special privileges (PR:N) but relies on user installation (UI:R); impact is limited confidentiality only (C:L, I:N, A:N).

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (zte).

CVSS VectorVendor: zte

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

DescriptionCVE.org

ZTE Z80 Ultra contains an information disclosure vulnerability, through which third-party applications can read relevant information by hooking system APIs.

Threat Intelligence Overview

EPSS Score
0.1%
Top 98% exploitable
Prevalence
Low
single specific ZTE smartphone model, limited regional handset footprint
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC No
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Low
Technical Impact
Partial

Priority Score

16
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +16
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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