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TI-2026-08243 Aliases CVE-2026-9396GHSA-8j4m-2qxx-4mqg

Besen BS20 EV Charging Station Firmware Version Check ui layer

Priority MEDIUM 61CWE-1021Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Spoofing
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-1021.

Summary

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."

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00268 19th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
BesenBS20 EV Charging Station20260426—No fix listedCNA
  • BS20 EV Charging Station VendorBesen Affected 20260426 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:*——Besen
  • cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:* Versions — — ·Besen

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9396
  2. 2026-10-03 Alias added: GHSA-8j4m-2qxx-4mqg

References

Other 1

  • TI-2026-08244 Besen BS20 EV Charging Station OTA Update Installation improper authorization CVSS 4.0CRITICAL 9.2
  • TI-2026-08242 Besen BS20 EV Charging Station BLE/UDP insufficiently protected credentials CVSS 4.0MEDIUM 5.1
  • TI-2026-08245 Besen BS20 EV Charging Station BLE/WiFi authentication replay CVSS 4.0LOW 2.3
  • TI-2026-08241 Besen BS20 EV Charging Station Bluetooth Low Energy weak password CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences