CVE-2026-9398

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 21.8% of scored records. A rank, not a probability.

NVD base score

1.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS 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

NVD analysis status

Deferred. NVD last modified this record on 2026-07-23.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-05-24 20:45Z3 MO AGO

Last updated

2026-05-29 18:17Z3 MO AGO

Reserved

2026-05-24

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Low (CVSS 2.3)

CNA CVSS 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

Weaknesses

• CWE-287Improper AuthenticationClass
• CWE-294Authentication Bypass by Capture-replayBase

Data version

5.2

Document digest

986cb5410f274df9b634d30909296bec7c2ae008d10708693fd6f18a764e62c2

• vuldb.comVDB-365379 | Besen BS20 EV Charging Station BLE/WiFi authentication replayhttps://vuldb.com/vuln/365379vdb-entry
• vuldb.comVDB-365379 | CTI Indicators (IOB, IOC, TTP)https://vuldb.com/vuln/365379/ctisignaturepermissions-required
• vuldb.comSubmit #813577 | Besen EV Charging Station BS20 EV Charger Improper Authorizationhttps://vuldb.com/submit/813577third-party-advisory
• github.comhttps://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commandsrelated