CVE-2026-9397
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
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.
Risk Assessment
Improper authorization could allow unauthorized firmware updates, potentially leading to full control of the charging station.
Recommendation
Immediately contact the vendor for patches and monitor security advisories.
Other vulnerabilities in Besen BS20 EV Charging Station
See all- CVE-2026-9398Low
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.
- 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 weakness has been identified in Besen BS20 EV Charging Station up to 20260426. Affected by this issue is some unknown functionality of the component OTA Update Installation Handler. This manipulation causes improper authorization. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitation is known to be 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."