CVE-2026-93832

Executive Summary

CVE-2026-93832 is a Missing Authorization vulnerability (CWE-862) in a component of a Motorola system application that was exported without the required permission restriction. Because the component is reachable by other local applications, an attacker with a low-privileged local foothold can invoke it to revoke runtime permissions from other installed apps, weakening their security posture and potentially disabling their protections.

The vulnerability has a CVSS v3.1 base score of 4.4 (Medium) and, per the available data, no public proof-of-concept, no exploit code, and no Nuclei template exist. No patch evidence is available from any tracked source; the issue is treated as unpatched pending vendor guidance.

Technical Analysis

The NVD description states that "a component of one of the Motorola system applications was exported without permission, allowing for the revocation of runtime permissions from other apps." In Android's application model, a component declared with android:exported="true" is reachable by other applications on the device. If such an exported component is not protected by a permission requirement, any co-installed app — including one under the control of a local attacker or a low-privilege malicious app — can send it an intent and cause it to perform privileged operations.

CWE-862 (Missing Authorization) is the assigned weakness class: the exported component performs a security-relevant action (the revocation of runtime permissions from other applications) without verifying that the caller is authorized to request that action. The practical consequence is a confused-deputy effect. The vulnerable Motorola system application is itself a system application, so it may hold privileges or interface with components that ordinary third-party apps cannot reach; an unprivileged local app inherits those capabilities by proxy through the unprotected exported component.

The system does not treat this as a confidentiality or scope-changing issue. The CVSS vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L indicates a local attack vector (AV:L), low attack complexity (AC:L), low privileges required (PR:L), and no user interaction (UI:N). There is no impact to confidentiality (C:N), limited impact to integrity (I:L), and limited impact to availability (A:L). Scope is unchanged (S:U). Impact is therefore bounded to modifying the permission state of other applications, which can degrade their integrity and availability of protection features but does not directly expose confidential data, per the assigned metrics.

The available intelligence does not name the specific exported component, its intent action or authority string, the owning Motorola package name, or the affected Android/Motorola build versions. Those details are not present in the provided data and are deliberately not asserted here.

Exploitation Scenarios

No public proof-of-concept is available; the attack chain below is inferred from the vulnerability class (CWE-862, unprotected exported component) and the stated effect (revocation of runtime permissions from other apps) in the NVD description. Specific component names, intent actions, and package identifiers are not available in the source data and are not invented here.

1. Reconnaissance / target identification. The attacker first obtains a local foothold on a vulnerable Motorola device — for example through a malicious or trojanized sideloaded app, a malicious app from a third-party store, or another local code-execution primitive. Having established a low-privileged app context, the attacker enumerates exported components of installed system applications (for example through static inspection of installed package metadata on the device or by attempting to resolve and launch candidate components).

2. Triggering the flaw. Per the description, a component of a Motorola system application is exported without permission. The attacker identifies that exported component and constructs an invocation targeting it. Because the component requires no caller permission and the attacker holds only a low-privileged local context (PR:L), the missing authorization check (CWE-862) allows the call to succeed. No user interaction is required (UI:N).

3. Execution method (vulnerability-class level). The unprotected exported component is caused to execute its built-in operation — the revocation of runtime permissions from other applications. At the class level this is an unauthorized invocation of a privileged system-app capability through a confused deputy: the caller never needs the permissions the operation itself requires, because the check is absent on the exported entry point.

4. Post-exploitation impact. Applications installed on the device have their granted runtime permissions revoked. This degrades the security guarantees of those apps — for example, an app that previously held a permission needed to enforce a protective function may lose it — and produces limited integrity and availability impact (I:L, A:L) while not directly yielding confidentiality impact (C:N) under the assigned vector. The attacker can use the revoked-permission state to reduce the effectiveness of security or privacy applications, or to create a degraded-state precondition for follow-on local attacks. Because the effect is local and targeted at on-device applications, the blast radius is confined to the compromised device.

Impact Assessment

The vulnerability is exploitable only from a local context, as reflected by AV:L, and requires the attacker to already possess low privileges on the device (PR:L) — typically a co-installed or attacker-controlled app. No user interaction is needed (UI:N), so no social engineering step beyond initial app installation is implied.

Impact is bounded: confidentiality is unaffected (C:N); the primary effect is limited integrity impact (I:L) from altering the permission state of other apps, with limited availability impact (A:L) where revoking permissions disables app functionality or protection features. Scope is unchanged (S:U), meaning the exploited component does not cross a privilege/security boundary in the CVSS sense.

Affected systems are Motorola devices running the affected Motorola system application build; the specific device models, Android versions, and app versions are not disclosed in the available data. The blast radius is per-device rather than fleet-wide: an exploit must be delivered to and run on the target handset. For enterprise fleets, the aggregate risk is proportional to the number of Motorola endpoints deployed and the organization's tolerance for on-device apps being silently stripped of permissions. Given the CVSS base score of 4.4, this is a Medium-severity, medium-likelihood issue requiring an existing local foothold, and it is not listed in CISA KEV, indicating no confirmed in-the-wild exploitation at the time of this report.

Detection Guidance

Sigma Rule

Sigma does not natively cover on-device Android component invocations; the following rule targets host/EDR telemetry where Android activity or adb-driven component launches are logged (e.g., via MDM/EDR agents). Field names vary by telemetry source and must be mapped in your environment.

title: Suspicious Invocation of Exported Motorola System App Component (CVE-2026-93832)
id: 3f2a9c1e-0b7d-4e2a-9c3f-938320260001
status: experimental
description: Detects attempts to invoke an exported Motorola system application component observed in association with unauthorized runtime-permission revocation (CWE-862).
references:
  - https://nvd.nist.gov/vuln/detail/CVE-2026-93832
author: Threat Intelligence, valtersit.com
date: 2026/01/01
tags:
  - attack.t1222
  - attack.defense_evasion
logsource:
  product: android
  service: component_invocation
detection:
  selection_exported:
    package|contains: 'motorola'
  selection_action:
    action|contains:
      - 'REVOKE_RUNTIME_PERMISSION'
      - 'revoke'
  condition: selection_exported and selection_action
falsepositives:
  - Legitimate Motorola system services managing permissions
level: medium

YARA Rule

The YARA rule targets on-device artifacts (APK/embedded manifest strings) that reference a Motorola system package alongside permission-revocation semantics. String literals are minimal because no specific identifiers are disclosed in the source data; tune before production use.

rule Android_Motorola_Exported_Component_CVE_2026_93832
{
    meta:
        description = "Detects APK/DEX artifacts referencing a Motorola system application component and permission-revocation semantics (CVE-2026-93832, CWE-862)"
        author = "Threat Intelligence, valtersit.com"
        date = "2026-01-01"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2026-93832"
        severity = "medium"

    strings:
        $pkg1 = "com.motorola" ascii wide nocase
        $perm1 = "REVOKE_RUNTIME_PERMISSION" ascii wide
        $perm2 = "revokeRuntimePermission" ascii wide
        $exp1  = "android:exported=\"true\"" ascii
        $exp2  = "exported=true" ascii wide

    condition:
        uint32be(0) == 0x504b0304 and
        ($pkg1 and ($perm1 or $perm2)) and ($exp1 or $exp2)
}

Suricata IDS Rule

No network protocol is implicated by the description (the flaw is a local, on-device component authorization issue). The rule below is a placeholder that fires only if a management/telemetry channel carries an explicit permission-revocation command referencing a Motorola package; adjust to the actual endpoint-management protocol in use.

alert http any any -> any any (msg:"CVE-2026-93832 Possible Motorola Runtime Permission Revocation Command"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"permission"; nocase; http.request_body; content:"com.motorola"; nocase; http.request_body; content:"revoke"; nocase; threshold:type limit, track by_src, count 1, seconds 60; classtype:attempted-admin; sid:9383201; rev:1; metadata:created_at 2026_01_01, cve CVE-2026-93832;)

Elastic Detection

EQL query over endpoint/Android telemetry, keyed to on-device component invocation events where an exported Motorola component is invoked with permission-revocation semantics.

process where event.category == "process" and
  process.name != null and
  stringContains(process.command_line, "motorola") and
  (stringContains(process.command_line, "revoke") or
   stringContains(process.command_line, "REVOKE_RUNTIME_PERMISSION"))

If an Android-specific telemetry index exists, substitute the appropriate event.action field for process.command_line.

Splunk SPL Query

index=android OR index=endpoint sourcetype IN ("android:component","edr:android")
| search (package="*motorola*" OR component="*motorola*") AND (action="*revoke*" OR action="*REVOKE_RUNTIME_PERMISSION*" OR message="*revoke*permission*")
| stats count min(_time) as first_seen max(_time) as last_seen values(package) as packages values(action) as actions by src_host, calling_package
| where count > 0
| convert ctime(first_seen) ctime(last_seen)

Wazuh OSSEC Rule

<group name="android,motorola,cve-2026-93832,">
  <rule id="938321" level="10">
    <decoded_as>json</decoded_as>
    <field name="package">\.*motorola\.*</field>
    <field name="action">\.*revoke\.*</field>
    <description>CVE-2026-93832 - Possible unauthorized runtime permission revocation via exported Motorola system app component</description>
    <mitre>
      <id>T1222</id>
    </mitre>
    <group>cve_2026_93832,permission_abuse,</group>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence: 0/4 (UNPATCHED — no patch evidence from any tracked source).

1. Immediate mitigations.

   • Restrict installation sources on managed Motorola devices (disable unknown sources / restrict to managed Google Play) to reduce the likelihood of an attacker-controlled local app that can invoke the exported component.
   • Minimize the number of sideloaded and low-trust applications on affected devices; uninstall unused or unvetted apps that could act as the local trigger.
   • Where MDM controls exist, monitor and alert on unexpected runtime-permission changes for security- and privacy-relevant applications, and re-grant permissions that are revoked without an authorized change.
   • Treat any device exhibiting unexplained permission revocation as potentially compromised and initiate incident response (preserve logs, review recently installed apps).
   • Because no workaround is provided by the vendor, device isolation or decommissioning of highly sensitive handsets can be considered if the local-app threat model is unacceptable.

2. Patch / upgrade steps.

   • No vendor fix, patch reference, or fixed version is currently identified; affected version ranges are undisclosed. Monitor Motorola's official security bulletin channel and the Motorola Security Advisories page for a remediation release, then apply the vendor-supplied system application update and the corresponding device firmware update when available.
   • Track the CVE via NVD for updates to the reference list and any CPE entries that clarify affected models/versions.
   • Do not apply third-party "fixes"; only vendor-signed updates should be deployed.

3. Long-term hardening.

   • Enforce a managed-device policy that prevents installation of unvetted applications and limits which apps can request sensitive runtime permissions.
   • Deploy MDM/EDR telemetry on Android fleets so that component-invocation and permission-change events are centrally logged and alertable.
   • Include Android system-application permission-state baselines in device integrity monitoring, and alert on deviations.
   • Maintain an inventory of Motorola devices and their OS/system-app build levels to enable rapid targeted remediation once a fixed version is published.

References

• NVD — CVE-2026-93832: https://nvd.nist.gov/vuln/detail/CVE-2026-93832
• MITRE CWE-862 — Missing Authorization: https://cwe.mitre.org/data/definitions/862.html
• Motorola Security Advisories (vendor channel; monitor for an advisory): https://www.motorola.com/us/security
• Android Developers — App security / exported components guidance: https://developer.android.com/privacy-and-security/security-best-practices
• FIRST.org EPSS (not yet scored for this CVE): https://www.first.org/epss

No threat actor campaign, exploit-in-the-wild evidence, public PoC, or CISA KEV listing is associated with CVE-2026-93832 in the available data.