Vulnerability-Lookup

JVNDB-2026-026397

Vulnerability from jvndb - Published: 2026-08-04 14:10 - Updated:2026-08-04 14:10

Severity

5.3 (Medium) - cvssV3_0 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Summary

Sharp Network Scanner Tool insecure initial configuration

Details

Network Scanner Tool and Network Scanner Tool Lite provided by Sharp Corporation are Windows applications which work as FTP servers and accept scan outputs from MFPs. With the initial configuration, anyone can upload files unlimitedly without authentication.

Initialization of a Resource with an Insecure Default (CWE-1188) - CVE-2026-62416

Deniz Güney Yıldırım reported this vulnerability to Sharp Corporation and coordinated. After the coordination was completed, Sharp Corporation reported the case to JPCERT/CC to notify users of the solution through JVN.

References

Type

URL

	JVN	https://jvn.jp/en/vu/JVNVU92540957/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-62416
	Insecure Default Initialization of Resource(CWE-1188)	https://cwe.mitre.org/data/definitions/1188.html

Impacted products

Vendor

Product

Sharp Corporation

Network Scanner Tool

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-026397.html",
  "dc:date": "2026-08-04T14:10+09:00",
  "dcterms:issued": "2026-08-04T14:10+09:00",
  "dcterms:modified": "2026-08-04T14:10+09:00",
  "description": "Network Scanner Tool and Network Scanner Tool Lite provided by Sharp Corporation are Windows applications which work as FTP servers and accept scan outputs from MFPs.\r\nWith the initial configuration, anyone can upload files unlimitedly without authentication.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/1188.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eInitialization of a Resource with an Insecure Default (CWE-1188) - CVE-2026-62416\u003c/li\u003e\u003c/ul\u003eDeniz G\u0026#252;ney Y\u0026#305;ld\u0026#305;r\u0026#305;m reported this vulnerability to Sharp Corporation and coordinated. After the coordination was completed, Sharp Corporation reported the case to JPCERT/CC to notify users of the solution through JVN.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-026397.html",
  "sec:cpe": {
    "#text": "cpe:/a:sharp:network_scanner_tool",
    "@product": "Network Scanner Tool",
    "@vendor": "Sharp Corporation",
    "@version": "2.2"
  },
  "sec:cvss": {
    "@score": "5.3",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-026397",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/vu/JVNVU92540957/index.html",
      "@id": "JVNVU#92540957",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-62416",
      "@id": "CVE-2026-62416",
      "@source": "CVE"
    },
    {
      "#text": "https://cwe.mitre.org/data/definitions/1188.html",
      "@id": "CWE-1188",
      "@title": "Insecure Default Initialization of Resource(CWE-1188)"
    }
  ],
  "title": "Sharp Network Scanner Tool insecure initial configuration"
}

CVE-2026-62416 (GCVE-0-2026-62416)

Vulnerability from cvelistv5 – Published: 2026-08-03 07:58 – Updated: 2026-08-03 11:09

Summary

Network Scanner Tool and Network Scanner Tool Lite provided by Sharp Corporation, with the initial configuration, require no authentication and accept files unlimitedly. When the affected products are used with the initial configuration, anyone can connect to them without authentication and upload files unlimitedly. This may cause a denial-of-service (DoS) condition on the PC. Furthermore, if a malicious file is uploaded, a PC user may be tricked to execute the file to attack other entities from that PC.

Severity

5.3 (Medium)


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

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-1188 - Initialization of a resource with an insecure default

Assigner

jpcert

References

3 references

URL	Tags
https://global.sharp/corporate/info/product-secur…
https://corporate.jp.sharp/info/product-security/…
https://jvn.jp/en/vu/JVNVU92540957/

Impacted products

2 products

Vendor	Product	Version
Sharp Corporation	Network Scanner Tool Lite	Affected: 0 , ≤ V2.0.13.3 (semver)
Sharp Corporation	Network Scanner Tool (Bundled software for Sharpdesk)	Affected: 0 , ≤ V6.1.1.8 (semver)

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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              "content": {
                "id": "CVE-2026-62416",
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2026-08-03T11:08:36.337640Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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}

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

JVNDB-2026-026397

CVE-2026-62416 (GCVE-0-2026-62416)

Tags

Sightings

Nomenclature