CVE-2026-9398 LOW

CVE-2026-9398: Besen BS20 EV Charging Station BLE/WiFi authentication replay

Vendor Besen
Product BS20 EV Charging Station
Weakness CWE-294
Published May 24, 2026
Last update May 29, 2026

CVSS base score

2.3/10
Attack vector Adjacent
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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."

Key dates

02Disclosure timeline

May 24, 2026 CVE published
May 29, 2026 Record updated