Vulnerability · Published May 24, 2026 · Assigned by VulDB
CVE-2026-9396Besen BS20 EV Charging Station Firmware Version Check ui layer
Low 3.7
In plain English
A low-severity security flaw in BS20 EV Charging Station from Besen. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Official 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."
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Besen | BS20 EV Charging Station | 20260426 |
Weakness: CWE-1021 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
References
- VDB-365377 | Besen BS20 EV Charging Station Firmware Version Check ui layer vdb-entry
- VDB-365377 | CTI Indicators (IOB, IOC) signature, permissions-required
- Submit #813575 | Besen EV Charging Station BS20 EV Charger Improper Verification of Cryptographic Signature third-party-advisory
- https://github.com/carfeii/besen#finding-3-firmware-version-check-manipulation-and-ui-spoofing related