CVE-2025-5826: Autel MaxiCharger AC Wallbox Commercial ble_process_esp32_msg Misinterpretation of Input Vulnerability

Severity: medium (CVSS 6.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-25 · updated 2026-06-17
Weakness: CWE-115

Description

Autel MaxiCharger AC Wallbox Commercial ble_process_esp32_msg Misinterpretation of Input Vulnerability. This vulnerability allows network-adjacent attackers to inject arbitrary AT commands on affected installations of Autel MaxiCharger AC Wallbox Commercial charging stations. Authentication is not required to exploit this vulnerability. The specific flaw exists within the ble_process_esp32_msg function. The issue results from misinterpretation of input data. An attacker can leverage this vulnerability to execute AT commands in the context of the device. Was ZDI-CAN-26368.

Affected products

Autel MaxiCharger AC Elite Business C50: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51
Autel Maxicharger Ac Pro Firmware: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51
Autel Maxicharger Ac Ultra Firmware: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51
Autel Maxicharger Dc Compact Mobile Firmware: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51
Autel Maxicharger Dc Compact Pedestal Firmware: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51
Autel Maxicharger Dc Fast Firmware: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51
Autel Maxicharger Dc Hipower Firmware: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51
Autel Maxicharger Dh480 Firmware: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51
Autel MaxiCharger Single: before 1.39.51; before 1.56.51 — fixed in 1.39.51, 1.56.51

How to fix

Upgrade to a fixed version: Autel MaxiCharger AC Elite Business C50 1.39.51, 1.56.51; Autel Maxicharger Ac Pro Firmware 1.39.51, 1.56.51; Autel Maxicharger Ac Ultra Firmware 1.39.51, 1.56.51; Autel Maxicharger Dc Compact Mobile Firmware 1.39.51, 1.56.51; Autel Maxicharger Dc Compact Pedestal Firmware 1.39.51, 1.56.51; Autel Maxicharger Dc Fast Firmware 1.39.51, 1.56.51; Autel Maxicharger Dc Hipower Firmware 1.39.51, 1.56.51; Autel Maxicharger Dh480 Firmware 1.39.51, 1.56.51; Autel MaxiCharger Single 1.39.51, 1.56.51. Check the vendor advisory for mitigations.

References

https://www.zerodayinitiative.com/advisories/ZDI-25-345/

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