Vulnerability-Lookup

CVE-2026-9398 (GCVE-0-2026-9398)

Vulnerability from cvelistv5 – Published: 2026-05-24 20:45 – Updated: 2026-05-29 18:17

Title

Besen BS20 EV Charging Station BLE/WiFi authentication replay

Summary

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."

Severity

2.3 (Low)


                        
                          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

3.1 (Low)


                        
                          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

3.1 (Low)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-294 - Authentication Bypass by Capture-replay
CWE-287 - Improper Authentication

Assigner

VulDB

References

4 references

URL	Tags
https://vuldb.com/vuln/365379	vdb-entry
https://vuldb.com/vuln/365379/cti	signaturepermissions-required
https://vuldb.com/submit/813577	third-party-advisory
https://github.com/carfeii/besen#finding-5-unauth…	related

Impacted products

1 product

Vendor	Product	Version
Besen	BS20 EV Charging Station	Affected: 20260426 cpe:2.3:a:besen:bs20_ev_charging_station::::::::

Credits

carfeii (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-9398

Vulnerability from fkie_nvd - Published: 2026-05-24 21:16 - Updated: 2026-06-17 11:05

Severity

3.1 (Low) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands
	cna@vuldb.com	https://vuldb.com/submit/813577
	cna@vuldb.com	https://vuldb.com/vuln/365379
	cna@vuldb.com	https://vuldb.com/vuln/365379/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "BLE/WiFi"
          ],
          "product": "BS20 EV Charging Station",
          "vendor": "Besen",
          "versions": [
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              "version": "20260426"
            }
          ]
        }
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    }
  ],
  "id": "CVE-2026-9398",
  "lastModified": "2026-06-17T11:05:10.123",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "HIGH",
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          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 1.8,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:A/AC:H/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
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        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
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          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
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        "impactScore": 1.4,
        "source": "cna@vuldb.com",
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      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
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          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-9398",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-29T18:17:43.949035Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-24T21:16:32.923",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/813577"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/365379"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/365379/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        },
        {
          "lang": "en",
          "value": "CWE-294"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-VVWR-2PC3-326Q

Vulnerability from github – Published: 2026-05-26 13:30 – Updated: 2026-05-26 13:30

Details

Severity

3.1 (Low)


                  
                    CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

1.3 (Low)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-9398"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-24T21:16:32Z",
    "severity": "LOW"
  },
  "details": "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.\"",
  "id": "GHSA-vvwr-2pc3-326q",
  "modified": "2026-05-26T13:30:35Z",
  "published": "2026-05-26T13:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9398"
    },
    {
      "type": "WEB",
      "url": "https://github.com/carfeii/besen#finding-5-unauthorized-tampering-of-charger-commands"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/813577"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/365379"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/365379/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-9398 (GCVE-0-2026-9398)

FKIE_CVE-2026-9398

GHSA-VVWR-2PC3-326Q

Tags

Sightings

Nomenclature