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TI-2026-08244 Aliases CVE-2026-9397GHSA-2468-xgpc-jvv7

Besen BS20 EV Charging Station OTA Update Installation improper authorization

Priority MEDIUM 42CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-285.

Summary

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."

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00454 39th 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
None
Automatable
No
Technical impact
Total

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-2026-9397
  2. 2026-10-03 Alias added: GHSA-2468-xgpc-jvv7
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 1

  • TI-2026-08243 Besen BS20 EV Charging Station Firmware Version Check ui layer CVSS 4.0MEDIUM 6.3
  • 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