Description
A weakness has been identified in Besen BS20 EV Charging Station up to 20260426. Affected by this issue is some unknown functionality of the component OTA Update Installation Handler. This manipulation causes improper authorization. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitation is known 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."
Published: 2026-05-24
Score: 9.2 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 26 May 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Sun, 24 May 2026 20:45:00 +0000

Type Values Removed Values Added
Description A weakness has been identified in Besen BS20 EV Charging Station up to 20260426. Affected by this issue is some unknown functionality of the component OTA Update Installation Handler. This manipulation causes improper authorization. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitation is known 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."
Title Besen BS20 EV Charging Station OTA Update Installation improper authorization
First Time appeared Besen
Besen bs20 Ev Charging Station
Weaknesses CWE-266
CWE-285
CPEs cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:*
Vendors & Products Besen
Besen bs20 Ev Charging Station
References
Metrics cvssV2_0

{'score': 7.6, 'vector': 'AV:N/AC:H/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.1, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}


Subscriptions

Besen Bs20 Ev Charging Station
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-05-26T14:37:21.762Z

Reserved: 2026-05-24T06:19:00.635Z

Link: CVE-2026-9397

cve-icon Vulnrichment

Updated: 2026-05-26T14:37:16.375Z

cve-icon NVD

Status : Deferred

Published: 2026-05-24T21:16:32.767

Modified: 2026-06-17T11:05:09.940

Link: CVE-2026-9397

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-24T21:30:08Z

Weaknesses