CVE-2025-5825: Autel MaxiCharger AC Wallbox Commercial Firmware Downgrade Remote Code Execution Vulnerability

Severity: high (CVSS 7.5 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-1328

Description

Autel MaxiCharger AC Wallbox Commercial Firmware Downgrade Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Wallbox Commercial charging stations. 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 firmware update process. The issue results from the lack of proper validation of a firmware image before using it to perform an upgrade. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the device. Was ZDI-CAN-26354.

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-25-344/

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