FKIE_CVE-2026-9394
Vulnerability from fkie_nvd - Published: 2026-05-24 20:16 - Updated: 2026-07-23 11:10
Severity
Summary
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."
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:*"
],
"modules": [
"Bluetooth Low Energy Handler"
],
"product": "BS20 EV Charging Station",
"vendor": "Besen",
"versions": [
{
"status": "affected",
"version": "20260426"
}
]
}
],
"source": "cna@vuldb.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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.\""
},
{
"lang": "es",
"value": "Se determin\u00f3 una vulnerabilidad en la estaci\u00f3n de carga de veh\u00edculos el\u00e9ctricos Besen BS20 hasta el 20260426. Esto afecta una funci\u00f3n desconocida del componente Gestor de Bluetooth de Baja Energ\u00eda. Ejecutar una manipulaci\u00f3n puede llevar a requisitos de contrase\u00f1a d\u00e9biles. El ataque debe realizarse dentro de la red local. Este ataque se caracteriza por una alta complejidad. Se dice que la explotabilidad es dif\u00edcil. La divulgaci\u00f3n original menciona que \u0027estas vulnerabilidades han sido reportadas a Besen y hemos recibido su reconocimiento de que est\u00e1n revisando esto a partir de abril de 2026.\u0027"
}
],
"id": "CVE-2026-9394",
"lastModified": "2026-07-23T11:10:00.120",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "HIGH",
"accessVector": "ADJACENT_NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 1.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:A/AC:H/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.2,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "cna@vuldb.com",
"type": "Secondary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 3.1,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 1.4,
"source": "cna@vuldb.com",
"type": "Secondary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 1.3,
"baseSeverity": "LOW",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "PROOF_OF_CONCEPT",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "cna@vuldb.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-9394",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-27T18:42:45.434637Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-24T20:16:43.837",
"references": [
{
"source": "cna@vuldb.com",
"url": "https://github.com/carfeii/besen#finding-1-weak-authentication-mechanism-in-besen-home-ev-charging-station-via-ble"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/submit/813569"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/vuln/365375"
},
{
"source": "cna@vuldb.com",
"url": "https://vuldb.com/vuln/365375/cti"
}
],
"sourceIdentifier": "cna@vuldb.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-521"
}
],
"source": "cna@vuldb.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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