CVE-2026-9396

LOW

Besen BS20 EV Charging Station Firmware Version Check ui layer

Title source: cna
STIX 2.1

Description

A security flaw has been discovered in Besen BS20 EV Charging Station up to 20260426. Affected by this vulnerability is an unknown functionality of the component Firmware Version Check. The manipulation results in improper restriction of rendered ui layers. The attack can be executed remotely. A high complexity level is associated with this attack. The exploitation appears 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 (4)

Core 4
Core References
Vdb Entry vdb-entry
VDB-365377 | Besen BS20 EV Charging Station Firmware Version Check ui layer
https://vuldb.com/vuln/365377
Signature, Permissions Required signature permissions-required
VDB-365377 | CTI Indicators (IOB, IOC)
https://vuldb.com/vuln/365377/cti
Third Party Advisory third-party-advisory
Submit #813575 | Besen EV Charging Station BS20 EV Charger Improper Verification of Cryptographic Signature
https://vuldb.com/submit/813575

Scores

CVSS v3 3.7
EPSS 0.0032
EPSS Percentile 23.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-1021
Status published
Products (1)
Besen/BS20 EV Charging Station 20260426
Published May 24, 2026
Tracked Since May 25, 2026