CVE-2026-9398CWE-287CWE-294

Besen BS20 EV Charging Station BLE/WiFi authentication replay

Low · published May 24, 2026

CVSS v4.0
2.3
EPSS
0%
Percentile
35.0
In the wild
Unconfirmed
What it is

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."

The record
Technical detail
CVSS v4.0
2.3 · LOW
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
EPSS
0.00418 · 35.0th percentile
Weaknesses
CWE-287 · Improper Authentication; CWE-294 · Authentication Bypass by Capture-replay
Published
2026-05-24T20:45Z
EPSS history
Timeline
  • 24 MAY 20:45Z
    Besen BS20 EV Charging Station BLE/WiFi authentication replay
    cvelistv5