Besen BS20 EV Charging Station BLE/WiFi authentication replay_CVE-2026-9398

2.3 / 10

LOW

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

Description

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."

Basic Information

ID CVE-2026-9398

Source VulDB

Published May 24, 2026 at 20:45

Affected Product

Vendor Besen

Product BS20 EV Charging Station

Version 20260426

Affected Versions Besen BS20 EV Charging Station 20260426

CWE Classification

CWE-294 CWE-287

References

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    "lastseen": "",
    "description": "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.\"",
    "published": "2026-05-24T20:45:08.425Z",
    "modified": "2026-05-24T20:45:08.425Z",
    "type": "cve",
    "title": "Besen BS20 EV Charging Station BLE/WiFi authentication replay",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/365379\nhttps://vuldb.com/vuln/365379/cti\nhttps://vuldb.com/submit/813577\nhttps://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands",
    "id": "CVE-2026-9398",
    "bulletinFamily": "",
    "cwe": [
        "CWE-294",
        "CWE-287"
    ],
    "cvelist": null,
    "sourceData": "Besen BS20 EV Charging Station 20260426",
    "sourceHref": "",
    "cvss": {
        "score": 2.3,
        "severity": "LOW",
        "vector": "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",
        "version": "4.0"
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        "privilegesRequired": "",
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        "cvssV3": {
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    "product": "BS20 EV Charging Station",
    "version": "20260426",
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