(Pwn2Own) Autel MaxiCharger AC Wallbox Commercial ble_process_esp32_msg Stack-based Buffer Overflow Remote Code Execution Vulnerability

June 11th, 2025
ZDI-25-346 ZDI-CAN-26369

CVE ID

CVE-2025-5827

CVSS Score

8.8 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Autel

Affected Products

Autel MaxiCharger AC Wallbox Commercial

Vulnerability Details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Wallbox Commercial EV chargers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the ble_process_esp32_msg function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device.

Additional Details

Fixed in American Standard: V1.39.51 and European Standard: V1.56.51


Disclosure Timeline

  • 2025-03-06 - Vulnerability reported to vendor
  • 2025-06-11 - Coordinated public release of advisory
  • 2025-06-11 - Advisory Updated

Credit

Quarkslab

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