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CVE-2026-9394— Besen BS20 EV Charging Station Bluetooth Low Energy weak password

Quick assessment

Affected
Besen BS20 EV Charging Station
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Besen BS20 EV Charging Station是中国Besen公司的一款交流电动汽车壁挂式充电桩。 Besen BS20 EV Charging Station 20260426及之前版本存在安全漏洞，该漏洞源于Bluetooth Low Energy Handler组件中未知功能操作不当，可能导致弱密码要求，攻击复杂度高。

CVSS 3.1 · Low EPSS 0.28% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
Besen BS20 EV Charging Station 20260426 affected
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I. Basic Information for CVE-2026-9394

Vulnerability Information
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Vulnerability Title
Besen BS20 EV Charging Station Bluetooth Low Energy weak password
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in Besen BS20 EV Charging Station up to 20260426. This impacts an unknown function of the component Bluetooth Low Energy Handler. Executing a manipulation can lead to weak password requirements. The attack needs to be done within the local network. This attack is characterized by high complexity. The exploitability is said to be 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."
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
弱口令要求
Source: CVE Program / CVE List V5
Vulnerability Title
Besen BS20 EV Charging Station 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Besen BS20 EV Charging Station是中国Besen公司的一款交流电动汽车壁挂式充电桩。 Besen BS20 EV Charging Station 20260426及之前版本存在安全漏洞，该漏洞源于Bluetooth Low Energy Handler组件中未知功能操作不当，可能导致弱密码要求，攻击复杂度高。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Besen BS20 EV Charging Station 20260426 cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-9394

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III. Intelligence Information for CVE-2026-9394

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Proof of Concept for CVE-2026-9394 (1)

Same Patch Batch · Besen · 2026-05-24 · 5 CVEs total

CVE-2026-9397 8.1 HIGH Besen BS20 EV Charging Station OTA Update Installation improper authorization
CVE-2026-9396 3.7 LOW Besen BS20 EV Charging Station Firmware Version Check ui layer
CVE-2026-9395 3.5 LOW Besen BS20 EV Charging Station BLE/UDP insufficiently protected credentials
CVE-2026-9398 3.1 LOW Besen BS20 EV Charging Station BLE/WiFi authentication replay

IV. Related Vulnerabilities

Same product: BS20 EV Charging Station
Same vendor: Besen
Same weakness: CWE-521

V. Comments for CVE-2026-9394

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