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Motorola Factory Test CVE-2026-5804

| EUVDEUVD-2026-30942 HIGH
2026-05-19 lenovo GHSA-5g7p-w325-jqc4
8.4
CVSS 4.0 · Vendor: lenovo
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Attack ChainAIDerived

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

  1. Access
    Install malicious low-privilege Android app
  2. Delivery
    Locate exposed motocit file descriptor
  3. Exploit
    Open TCP server via leaked FD
  4. Execution
    Issue requests as factory-test app
  5. Persist
    Bypass Android permission checks
  6. Impact
    Exfiltrate protected settings and data

Vulnerability Assessment

Exploitation Conditions

Exploitation requires the attacker to already be running code on the targeted Motorola phone as a low-privileged third-party Android app (CVSS AV:L, PR:L) - typically delivered via a sideloaded APK or a malicious app on an app store - and the vulnerable build of the Motorola Factory Test component com.motorola.motocit (pre-2026-04-05 patch) must be present and active on the device. No user interaction is needed after the malicious app is installed (UI:N), and no additional attack prerequisites are required (AT:N), but exploitation is bounded to the local device: there is no network-reachable attack surface, the issue does not work against handsets from other OEMs, and devices that have already received the April 2026 Motorola security update are not exploitable.

Impact

The CVSS 4.0 vector AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N is internally consistent with the description: an already-installed low-privileged app on the handset gains high confidentiality and integrity over protected device data, with no availability impact and no scope change beyond the vulnerable system. With patch availability confirmed by the vendor and the attack requiring code already running on the device (typically via a malicious sideloaded or Play Store app), this is a meaningful privilege-boundary break but not a remote, wormable issue. No EPSS or SSVC data was supplied, no POC was published, and the vulnerability is not in CISA KEV - so real-world exploitation is plausible but unproven, and prioritization should track Motorola's OTA rollout for the affected fleet rather than emergency response.

Exploit ScenarioDerived

A user installs an attacker-controlled Android app (e.g., from a third-party store or a malicious Play listing) that requests only ordinary permissions. Once running, the app reaches the leaked writable file descriptor exposed by com.motorola.motocit, opens a local TCP server inheriting the factory-test app's privileges, and uses it to read protected device settings and identifiers that the app itself would normally be denied. No public exploit identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – May 19, 2026

Authentication bypass in the Motorola Factory Test component (com.motorola.motocit) on Motorola phones lets a co-resident Android app abuse an exposed writable file descriptor in external storage to stand up a TCP server, harvest protected settings, and act with the factory-test app's elevated permissions. The flaw is locally exploitable by any installed third-party app with low privileges and carries CVSS 4.0 score 8.4 with high confidentiality and integrity impact. No public exploit identified at time of analysis and not listed in CISA KEV.

RemediationAI

Apply the Motorola security update dated 2026-04-05 or later, which patches the com.motorola.motocit component on affected handsets - installation guidance and per-model availability is tracked at https://en-us.support.motorola.com/app/answers/detail/a_id/192534. Where the OTA is not yet available for a given model, compensating controls are limited because the factory-test app is a non-removable system component: restrict sideloading and Unknown Sources, audit installed third-party apps for ones requesting external-storage or network privileges (which would let them reach the leaked descriptor and bind the rogue TCP server), and consider disabling com.motorola.motocit via adb (pm disable-user) on managed/enterprise devices, accepting the trade-off that future device diagnostics or RMA workflows depending on factory test may fail. Network-level egress filtering on the device's interfaces will not stop this since the TCP server is local to the handset.

Affected VersionsENISA

Phones 0 <2026-04-05

Affected Packages

euvd phones fix: 2026-04-05

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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

Technical ContextAI · show details

The bug lives in com.motorola.motocit, the pre-installed Motorola Factory Test (MotoCit) system app shipped on Motorola/Lenovo Android handsets (CPE cpe:2.3:a:motorola:phones). The component holds and leaks a reference to a writable file descriptor that resolves into external (world-readable) storage; because Android's FD inheritance and external-storage semantics let other apps reach that descriptor, a sibling unprivileged app can reuse it to bind a TCP listener inside the factory-test app's security context. That listener then services requests as the privileged component, sidestepping the Android permission model. No CWE was assigned, but the behavior maps to the CWE-287 (Improper Authentication) / CWE-732 (Incorrect Permission Assignment) family, with vendor and ENISA EUVD-2026-30942 tagging it as Authentication Bypass.

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Severity by source

Vendor (lenovo) PRIMARY 8.4 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (lenovo) · only source for this CVE.

CVSS VectorVendor: lenovo

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

1
Patch available
May 19, 2026 - 16:02 EUVD

DescriptionCVE.org

An improper authentication vulnerability was discovered in the Motorola Factory Test component (com.motorola.motocit). The application contained a reference to a writable file descriptor in external storage which could be used by third party apps running on the device to open a TCP server, exposing sensitive permissions and data. This could allow a local attacker to bypass permission checks and access protected device settings.

Executive ViewAI

Why It Matters

A high-severity authentication bypass in Motorola's Factory Test component exposes organizations deploying Motorola Android devices to privilege escalation and data exfiltration. Any installed application-including malware-can bypass security controls to harvest protected system settings and assume factory-test privileges, creating a direct attack vector for credential theft and corporate data compromise.

Business Impact: High
Compensating Controls

Apply vendor patch. Pending firmware deployment, enforce mobile device management policies restricting installation of untrusted third-party applications on affected Motorola devices, and disable sideloading of applications outside official app stores.

Threat Intelligence Overview

EPSS Score
0.0%
Top 97% exploitable
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 HIGH
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Scheduled
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +42
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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