CVE-2026-9398 Besen BS20 EV Charging Station BLE/WiFi authentication replay
Attackers on the local network can bypass authentication on Besen BS20 EV charging stations via BLE/WiFi replay attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9398?
CVE-2026-9398 is a low-severity authentication bypass vulnerability in Besen BS20 EV Charging Station, published on 24 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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."
Which versions are affected by CVE-2026-9398?
How do I fix CVE-2026-9398?
No fix has been published for CVE-2026-9398 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-9398 being exploited?
There is no known exploitation of CVE-2026-9398 in the wild and no public exploit code.
Sources
Also known as GHSA-vvwr-2pc3-326q.