CVE-2026-9398

LOW 3.1

Besen BS20 EV Charging Station BLE/WiFi authentication replay

CVSS Score

3.1

EPSS Score

0.0%

EPSS Percentile

11th

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."

CWE	CWE-294 CWE-287
Vendor	besen
Product	bs20 ev charging station
Published	May 24, 2026
Last Updated	May 29, 2026

Stay Ahead of the Next One

Get instant alerts for besen bs20 ev charging station

Be the first to know when new low vulnerabilities affecting besen bs20 ev charging station are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Besen / BS20 EV Charging Station

20260426

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/365379 vuldb.com: https://vuldb.com/vuln/365379/cti vuldb.com: https://vuldb.com/submit/813577 github.com: https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands

Credits

🔍 carfeii (VulDB User) VulDB CNA Team