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Vulnerability Details :

CVE-2026-9398

Summary
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
Published At-24 May, 2026 | 20:45
Updated At-24 May, 2026 | 20:45
Rejected At-
Credits

Besen BS20 EV Charging Station BLE/WiFi authentication replay

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."

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulDB
Assigner Org ID:1af790b2-7ee1-4545-860a-a788eba489b5
Published At:24 May, 2026 | 20:45
Updated At:24 May, 2026 | 20:45
Rejected At:
▼CVE Numbering Authority (CNA)
Besen BS20 EV Charging Station BLE/WiFi authentication replay

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
Vendor
Besen
Product
BS20 EV Charging Station
CPEs
  • cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:*
Modules
  • BLE/WiFi
Versions
Affected
  • 20260426
Problem Types
TypeCWE IDDescription
CWECWE-294Authentication Bypass by Capture-replay
CWECWE-287Improper Authentication
Type: CWE
CWE ID: CWE-294
Description: Authentication Bypass by Capture-replay
Type: CWE
CWE ID: CWE-287
Description: Improper Authentication
Metrics
VersionBase scoreBase severityVector
4.02.3LOW
CVSS: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
3.13.1LOW
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
3.03.1LOW
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
2.01.8N/A
AV:A/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
Version: 4.0
Base score: 2.3
Base severity: LOW
Vector:
CVSS: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
Version: 3.1
Base score: 3.1
Base severity: LOW
Vector:
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
Version: 3.0
Base score: 3.1
Base severity: LOW
Vector:
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
Version: 2.0
Base score: 1.8
Base severity: N/A
Vector:
AV:A/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
carfeii (VulDB User)
coordinator
VulDB CNA Team
Timeline
EventDate
Advisory disclosed2026-05-24 00:00:00
VulDB entry created2026-05-24 02:00:00
VulDB entry last update2026-05-24 08:24:19
Event: Advisory disclosed
Date: 2026-05-24 00:00:00
Event: VulDB entry created
Date: 2026-05-24 02:00:00
Event: VulDB entry last update
Date: 2026-05-24 08:24:19
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/vuln/365379
vdb-entry
https://vuldb.com/vuln/365379/cti
signature
permissions-required
https://vuldb.com/submit/813577
third-party-advisory
https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands
related
Hyperlink: https://vuldb.com/vuln/365379
Resource:
vdb-entry
Hyperlink: https://vuldb.com/vuln/365379/cti
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/submit/813577
Resource:
third-party-advisory
Hyperlink: https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands
Resource:
related
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cna@vuldb.com
Published At:24 May, 2026 | 21:16
Updated At:24 May, 2026 | 21:16

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."

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.01.3LOW
CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.13.1LOW
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Secondary2.01.8LOW
AV:A/AC:H/Au:N/C:N/I:P/A:N
Type: Secondary
Version: 4.0
Base score: 1.3
Base severity: LOW
Vector:
CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 3.1
Base severity: LOW
Vector:
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Type: Secondary
Version: 2.0
Base score: 1.8
Base severity: LOW
Vector:
AV:A/AC:H/Au:N/C:N/I:P/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-287Primarycna@vuldb.com
CWE-294Primarycna@vuldb.com
CWE ID: CWE-287
Type: Primary
Source: cna@vuldb.com
CWE ID: CWE-294
Type: Primary
Source: cna@vuldb.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commandscna@vuldb.com
N/A
https://vuldb.com/submit/813577cna@vuldb.com
N/A
https://vuldb.com/vuln/365379cna@vuldb.com
N/A
https://vuldb.com/vuln/365379/cticna@vuldb.com
N/A
Hyperlink: https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/submit/813577
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/vuln/365379
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/vuln/365379/cti
Source: cna@vuldb.com
Resource: N/A

Change History

0
Information is not available yet

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