CVE-2026-9397

Besen BS20 EV Charging Station OTA Update Installation improper authorization

HIGH
8.1
CVSS Score
Published: May 24, 2026 at 08:30 PM UTC
Updated: July 23, 2026 at 07:32 PM UTC
1 product affected across 1 vendorBS20 EV Charging Station

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Severity
HIGH8.1
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

VDB Entry
Source: cverecord
https://vuldb.com/vuln/365378
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/365378/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/813576

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-285CWE-266

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