CVE-2026-9398Public exploit

Charging manipulation via replayable wireless commands

Published May 24, 2026 · Updated May 24, 2026

Authentication replay in BESEN BS20 EV Charging Station 20260426 allows attackers to alter charging commands over BLE or Wi-Fi. Mobile-app commands lack encryption and integrity protection, so intercepted UDP packets can be modified or replayed without authentication. Adjacent wireless or local-network access is required; successful manipulation can change charging duration, current, power, or start and stop state.

CVSS severityUnavailable
Unscored
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication replay in BESEN BS20 EV Charging Station 20260426 allows attackers to alter charging commands over BLE or Wi-Fi. Mobile-app commands lack encryption and integrity protection, so intercepted UDP packets can be modified or replayed without authentication. Adjacent wireless or local-network access is required; successful manipulation can change charging duration, current, power, or start and stop state.

The record

CVE
CVE-2026-9398
Published
May 24, 2026
Updated
May 24, 2026
Vendor
BESEN INTERNATIONAL GROUP CO., LTD.
Product
BS20 EV Charging Station
Classifications
CWE-294, CWE-287, T1040, T1565.002
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 24, 2026CVE publishedPublication date reported by the CVE source.
  2. May 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=20260426

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

BESEN INTERNATIONAL GROUP CO., LTD. · BS20 EV Charging Stationversion=20260426

Published CVSS scores

2.3VulDB CNACVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
1.8VulDB CNAAV:A/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
3.1VulDB CNACVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
3.1VulDB CNACVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-294Authentication Bypass by Capture-replay
CWE-287Improper Authentication
T1040Network Sniffing
T1565.002Transmitted Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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