CVE-2025-5827: Autel Maxicharger Ac Elite Business c50 Firmware

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Autel MaxiCharger AC Wallbox Commercial ble_process_esp32_msg Stack-based Buffer Overflow Remote Code Execution Vulnerability. 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. Was ZDI-CAN-26369.

Affected products

• Autel Maxicharger Ac Elite Business c50 Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)
• Autel Maxicharger Ac Pro Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)
• Autel Maxicharger Ac Ultra Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)
• Autel Maxicharger DC Compact Mobile Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)
• Autel Maxicharger DC Compact Pedestal Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)
• Autel Maxicharger DC Fast Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)
• Autel Maxicharger DC Hipower Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)
• Autel Maxicharger DH480 Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)
• Autel Maxicharger Single Charger Firmware: before 1.39.51 (fixed in 1.39.51); before 1.56.51 (fixed in 1.56.51)

Published 2025-06-25. Last modified 2026-06-17.