Besen BS20 EV Charging Station up to 20260426 Bluetooth Low Energy weak password

CVSS Meta Temp Score
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CTI Interest Score
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2.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in Besen BS20 EV Charging Station up to 20260426 and classified as problematic. Affected is an unknown function of the component Bluetooth Low Energy Handler. The manipulation leads to weak password. This vulnerability is referenced as CVE-2026-9394. The attack needs to be initiated within the local network. Furthermore, an exploit is available. 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."

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Besen BS20 EV Charging Station up to 20260426. This issue affects an unknown part of the component Bluetooth Low Energy Handler. The manipulation with an unknown input leads to a weak password vulnerability. Using CWE to declare the problem leads to CWE-521. The product does not require that users should have strong passwords, which makes it easier for attackers to compromise user accounts. Impacted is confidentiality.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-9394. The exploitation is known to be difficult. The attack needs to be done within the local network. No form of authentication is needed for a successful exploitation. Technical details are unknown but an exploit is available. The attack technique deployed by this issue is T1552 according to MITRE ATT&CK.

It is declared as proof-of-concept. 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."

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-31548). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 2.8

VulDB Base Score: 3.1
VulDB Temp Score: 2.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Weak password
CWE: CWE-521
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Proof-of-Concept

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/24/2026 Advisory disclosed
05/24/2026 +0 days VulDB entry created
05/25/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-9394 (🔒)
GCVE (CVE): GCVE-0-2026-9394
GCVE (VulDB): GCVE-100-365375
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/24/2026 08:24
Updated: 05/25/2026 06:13
Changes: 05/24/2026 08:24 (53), 05/25/2026 06:13 (1)
Complete: 🔍
Submitter: carfeii
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #813569: Besen EV Charging Station BS20 EV Charger Weak Authentication (by carfeii)

Be aware that VulDB is the high quality source for vulnerability data.

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