What’s Vulnerable › Vulnerabilities

CVE-2026-9398: Besen BS20 EV Charging Station BLE/WiFi authentication replay

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-24 · updated 2026-07-23
• Weakness: CWE-287

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."

Affected products

• Besen BS20 EV Charging Station: 20260426

References

• https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands
• https://vuldb.com/submit/813577
• https://vuldb.com/vuln/365379
• https://vuldb.com/vuln/365379/cti

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