CVE-2026-9398

LOW

Besen BS20 EV Charging Station BLE/WiFi authentication replay

Title source: cna
STIX 2.1

Description

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."

References (4)

Core 4
Core References
Vdb Entry vdb-entry
VDB-365379 | Besen BS20 EV Charging Station BLE/WiFi authentication replay
https://vuldb.com/vuln/365379
Signature, Permissions Required signature permissions-required
VDB-365379 | CTI Indicators (IOB, IOC, TTP)
https://vuldb.com/vuln/365379/cti
Third Party Advisory third-party-advisory
Submit #813577 | Besen EV Charging Station BS20 EV Charger Improper Authorization
https://vuldb.com/submit/813577

Scores

CVSS v3 3.1
EPSS 0.0034
EPSS Percentile 26.1%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-287 CWE-294
Status published
Products (1)
Besen/BS20 EV Charging Station 20260426
Published May 24, 2026
Tracked Since May 25, 2026