CVE-2026-9397 (GCVE-0-2026-9397)
Vulnerability from cvelistv5 – Published: 2026-05-24 20:30 – Updated: 2026-05-26 14:37
VLAI
EPSS
VEX
Title
Besen BS20 EV Charging Station OTA Update Installation improper authorization
Summary
A weakness has been identified in Besen BS20 EV Charging Station up to 20260426. Affected by this issue is some unknown functionality of the component OTA Update Installation Handler. This manipulation causes improper authorization. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitation is known to be 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."
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 14:37 UTC
Assigner
VulDB
CNA
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/365378 | vdb-entry |
| https://vuldb.com/vuln/365378/cti | signaturepermissions-required |
| https://vuldb.com/submit/813576 | third-party-advisory |
| https://github.com/carfeii/besen#finding-4-unauth… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Besen | BS20 EV Charging Station |
Affected:
20260426
cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:* |
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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