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."

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Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Fri, 29 May 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 24 May 2026 21:00:00 +0000

Type Values Removed Values Added
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."
Title Besen BS20 EV Charging Station BLE/WiFi authentication replay
First Time appeared Besen
Besen bs20 Ev Charging Station
Weaknesses CWE-287
CWE-294
CPEs cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:*
Vendors & Products Besen
Besen bs20 Ev Charging Station
References
Metrics cvssV2_0

{'score': 1.8, 'vector': 'AV:A/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 3.1, 'vector': 'CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 2.3, '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-05-29T18:17:55.433Z

Reserved: 2026-05-24T06:19:03.634Z

Link: CVE-2026-9398

cve-icon Vulnrichment

Updated: 2026-05-29T18:17:50.583Z

cve-icon NVD

Status : Deferred

Published: 2026-05-24T21:16:32.923

Modified: 2026-05-26T19:57:25.770

Link: CVE-2026-9398

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-24T22:30:09Z

Weaknesses