| Title | Besen EV Charging Station BS20 EV Charger Weak Authentication |
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| Description | Finding 1: Weak Authentication Mechanism in Besen Home EV Charging Station via BLE
A weak authentication vulnerability exists in the Besen Home EV Charging Station. The device ships with a shared default (common) password and enforces a fixed 6-digit numeric password format, limiting the keyspace to 1,000,000 possible combinations. This significantly reduces resistance to brute-force attacks. Additionally, the Bluetooth Low Energy (BLE) authentication handshake can be captured and subjected to offline brute-force cracking, enabling attackers to recover credentials without further interaction with the device.
Successful exploitation may allow unauthorized access and control of the charging station.
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| Source | ⚠️ https://github.com/carfeii/besen |
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| User | carfeii (UID 97470) |
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| Submission | 04/26/2026 18:04 (3 months ago) |
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| Moderation | 05/24/2026 08:19 (28 days later) |
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| Status | Accepted |
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| VulDB entry | 365375 [Besen BS20 EV Charging Station up to 20260426 Bluetooth Low Energy weak password] |
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| Points | 19 |
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