CVE-2026-9394
Besen BS20 EV Charging Station Bluetooth Low Energy weak password
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."
INFO
Published Date :
May 24, 2026, 8:16 p.m.
Last Modified :
July 23, 2026, 11:10 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update the charging station software.
- Implement stronger password policies.
- Restrict network access to the charging station.
- Follow vendor security advisories.
Public PoC/Exploit Available at Github
CVE-2026-9394 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-9394.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-9394 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-9394
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-9394 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-9394 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: BS20 EV Charging Station de Besen, Description: Se determinó una vulnerabilidad en la estación de carga de vehículos eléctricos Besen BS20 hasta el 20260426. Esto afecta una función desconocida del componente Gestor de Bluetooth de Baja Energía. Ejecutar una manipulación puede llevar a requisitos de contraseña débiles. El ataque debe realizarse dentro de la red local. Este ataque se caracteriza por una alta complejidad. Se dice que la explotabilidad es difícil. La divulgación original menciona que 'estas vulnerabilidades han sido reportadas a Besen y hemos recibido su reconocimiento de que están revisando esto a partir de abril de 2026.' -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:*'], 'vendor': 'Besen', 'modules': ['Bluetooth Low Energy Handler'], 'product': 'BS20 EV Charging Station', 'versions': [{'status': 'affected', 'version': '20260426'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-9394', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-27T18:42:45.434637Z'} -
New CVE Received by [email protected]
May. 24, 2026
Action Type Old Value New Value Added 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." Added CVSS V4.0 AV:A/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Added CVSS V2 (AV:A/AC:H/Au:N/C:P/I:N/A:N) Added CWE CWE-521 Added Reference https://github.com/carfeii/besen#finding-1-weak-authentication-mechanism-in-besen-home-ev-charging-station-via-ble Added Reference https://vuldb.com/submit/813569 Added Reference https://vuldb.com/vuln/365375 Added Reference https://vuldb.com/vuln/365375/cti