CVE-2026-9398

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."

CVSS v3 3.1 LOW
CVSS v2.0 1.8 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

1.8^/10

CVSS v2.0 : LOW

Vector : AV:A/AC:H/Au:N/C:N/I:P/A:N

Exploitability : 3.2 / Impact : 2.9

Access Vector ADJACENT_NETWORK

Access Complexity HIGH

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands
https://vuldb.com/submit/813577
https://vuldb.com/vuln/365379
https://vuldb.com/vuln/365379/cti

Configurations

No configuration.

History

24 May 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-24 21:16

Updated : 2026-05-26 19:57

NVD link : CVE-2026-9398

Mitre link : CVE-2026-9398

CVE.ORG link : CVE-2026-9398

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

CWE-294

Authentication Bypass by Capture-replay

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