Maxicharger Ac Elite Business C50 FirmwareOperating system · Autel

CVE-2025-5824

HIGH · 7.5 CVSS v3.1 Published 2025-06-25
Fix available
A fix is available. Upgrade to 1.39.51 / 1.56.51 or later.
See remediation →
80/100
Remediation priority · High
No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Autel MaxiCharger AC Wallbox Commercial Origin Validation Error Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Autel MaxiCharger AC Wallbox Commercial. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the handling of bluetooth pairing requests. The issue results from insufficient validation of the origin of commands. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-26353.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

This is a Bluetooth authentication bypass vulnerability in Autel MaxiCharger AC Wallbox Commercial EV chargers. Attackers with the ability to pair a malicious Bluetooth device can exploit insufficient origin validation in the bluetooth pairing request handling to bypass system authentication.

MitigationSince the vulnerability is in vendor firmware, organizations should implement compensating controls including restricting Bluetooth pairing to authorized devices only, network segmentation of charging infrastructure, and monitoring for unauthorized Bluetooth device associations until vendor firmware updates are available.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Maxicharger Ac Elite Business C50 FirmwareOperating system
Affected:< 1.39.51< 1.56.51
Maxicharger Ac Pro FirmwareOperating system
Affected:< 1.39.51< 1.56.51
Maxicharger Ac Ultra FirmwareOperating system
Affected:< 1.39.51< 1.56.51
Maxicharger Dc Compact Mobile FirmwareOperating system
Affected:< 1.39.51< 1.56.51
Maxicharger Dc Compact Pedestal FirmwareOperating system
Affected:< 1.39.51< 1.56.51
Maxicharger Dc Fast FirmwareOperating system
Affected:< 1.39.51< 1.56.51
Maxicharger Dc Hipower FirmwareOperating system
Affected:< 1.39.51< 1.56.51
Maxicharger Dh480 FirmwareOperating system
Affected:< 1.39.51< 1.56.51

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the Autel MaxiCharger model
    Locate the physical charger or consult asset inventory to confirm the exact model (e.g., MaxiCharger AC Elite Business C50, AC Pro, AC Ultra, DC Compact Mobile, DC Compact Pedestal, DC Fast, DC Hipower, or DH480)
    Affected if The model is any of the affected products listed in the CVE
  2. Determine the installed firmware version
    Access the charger management interface (local display, admin web portal, or mobile app) and navigate to the firmware or system information section to retrieve the current firmware version number
    Affected if The firmware version is less than 1.39.51 or less than 1.56.51 (note: some models may follow either version branch)
  3. Check if Bluetooth pairing is enabled
    Access the charger settings via the admin interface or mobile app and verify whether Bluetooth pairing functionality is turned on or accessible
    Affected if Bluetooth pairing is enabled and discoverable, allowing potential attackers to initiate pairing requests
  4. Verify Bluetooth accessibility
    Use a Bluetooth scanner or compatible device to detect whether the charger is discoverable and accepting pairing connections from nearby devices
    Affected if The charger is discoverable and accepts pairing requests from unauthorized devices

You are affected if your Autel MaxiCharger is running firmware version below 1.39.51 or below 1.56.51 AND has Bluetooth pairing enabled or accessible to unauthorized devices.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.39.51 / 1.56.51 or later
Fixed in 1.39.511.56.51
Interim mitigation

Since the vulnerability is in vendor firmware, organizations should implement compensating controls including restricting Bluetooth pairing to authorized devices only, network segmentation of charging infrastructure, and monitoring for unauthorized Bluetooth device associations until vendor firmware updates are available.

Recommended fix Moderate confidence

Firmware version 1.39.51 or higher, or version 1.56.51 or higher (depending on device series)

  1. Identify the current firmware version of the affected MaxiCharger device by accessing the device management interface or checking system information
  2. Determine which firmware branch is applicable to your device (1.x or 2.x series) based on your current version
  3. Download the appropriate firmware update from Autel's official support portal or contact Autel technical support
  4. Follow the manufacturer's documented firmware update procedure, typically involving uploading the firmware file through the device's administrative web interface or mobile app
  5. Verify the firmware upgrade was successful by confirming the new version number in the device settings
  6. After upgrade, ensure Bluetooth pairing is disabled if not needed, or review and re-authorize only trusted Bluetooth devices
Caveat Review release notes for any configuration changes or feature modifications between versions; firmware updates may require reconfiguration of existing settings

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Maxicharger Ac Elite Business C50 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-5824 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data