CVE-2026-9398: low-severity vulnerability in Besen BS20 EV Charging Station
Besen BS20 EV Charging Station BLE/WiFi authentication replay
Published · Updated
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8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.3epss 0.3%
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."
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
Affected products
Besen · BS20 EV Charging StationRelated CVEs — Besen BS20 EV Charging Station
In the same product, most dangerous first.
CVE-2026-9397CRITICALBesen BS20 EV Charging Station OTA Update Installation improper authorizationEPSS 0.5%CVE-2026-9396MEDIUMBesen BS20 EV Charging Station Firmware Version Check ui layerEPSS 0.3%CVE-2026-9394LOWBesen BS20 EV Charging Station Bluetooth Low Energy weak passwordEPSS 0.2%CVE-2026-9395MEDIUMBesen BS20 EV Charging Station BLE/UDP insufficiently protected credentialsEPSS 0.2%