CVE-2026-9398
LowCVSS 3.1Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
A security vulnerability has been detected in Besen BS20 EV Charging Station up to version 20260426 in the BLE/WiFi component. Manipulation leads to authentication bypass via capture-replay attack. The attack requires local network access and is highly complex.
Risk Assessment
An attacker with local network access can gain unauthorized access to the charging station, potentially leading to uncontrolled charging or energy theft.
Recommendation
Immediately contact the vendor for a security update and restrict local network access to authorized devices only.
Other vulnerabilities in Besen BS20 EV Charging Station
See all- CVE-2026-9397High
A weakness has been identified in Besen BS20 EV Charging Station up to 20260426 in the OTA Update Installation Handler component. Manipulation leads to improper authorization. The attack can be carried out remotely but requires high complexity.
- CVE-2026-9396Low
A security flaw has been discovered in Besen BS20 EV Charging Station up to version 20260426 in the firmware version check functionality. Manipulation results in improper restriction of rendered UI layers. The attack is remote but requires high complexity.
- CVE-2026-9395Low
In Besen BS20 EV Charging Station up to version 20260426, an unknown function of the BLE/UDP component leads to insufficiently protected credentials. The attack requires local network access.
- CVE-2026-9394Low
In Besen BS20 EV Charging Station up to version 20260426, the Bluetooth Low Energy Handler component has a vulnerability that leads to weak password requirements. The attack requires local network access and is considered difficult to exploit.
Original NVD description (English source)
A security vulnerability has been detected in Besen BS20 EV Charging Station up to 20260426. This affects an unknown part of the component BLE/WiFi. Such manipulation leads to authentication bypass by capture-replay. The attack must be carried out from within the local network. Attacks of this nature are highly complex. It is indicated that the exploitability is difficult. The original disclosure mentions, that "[t]hese vulnerabilities have been reported to Besen and we have received their acknowlegement that they are reviewing this as of April 2026."
Vulnerability data from NVD (NIST) · CISA KEV · EPSS