CVE-2026-9398
CWE-287Published: May 24, 2026· Updated: May 26, 2026
Official Description
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."
Technical Analysis
CVE-2026-9398 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (4)
Quick Facts
Related CVEs (CWE-287)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-9398 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts