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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."

PUBLISHED Reserved 2026-05-24 | Published 2026-05-24 | Updated 2026-05-24 | Assigner VulDB




MEDIUM: 6.3CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
LOW: 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
2.6AV:N/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

Problem types

Improper Restriction of Rendered UI Layers

Product status

20260426
affected

Timeline

2026-05-24:Advisory disclosed
2026-05-24:VulDB entry created
2026-05-24:VulDB entry last update

Credits

carfeii (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/365377 (VDB-365377 | Besen BS20 EV Charging Station Firmware Version Check ui layer) vdb-entry

vuldb.com/vuln/365377/cti (VDB-365377 | CTI Indicators (IOB, IOC)) signature permissions-required

vuldb.com/submit/813575 (Submit #813575 | Besen EV Charging Station BS20 EV Charger Improper Verification of Cryptographic Signature) third-party-advisory

github.com/carfeii/besen related

cve.org (CVE-2026-9396)

nvd.nist.gov (CVE-2026-9396)

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