Vulnerability-Lookup

JVNDB-2026-000043

Vulnerability from jvndb - Published: 2026-03-25 18:41 - Updated:2026-03-25 18:41

Severity ?

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

Summary

SHARP routers missing authentication for some web APIs

Details

SHARP routers do not perform authentication for some web APIs. Those web APIs provide device information, and the initial administrative password is based on a part of the device information.

Missing authentication for critical function (CWE-306) - CVE-2026-32326

Shota Zaizen reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN49524110/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-32326
	No Mapping(CWE-Other)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

	KDDI	Speed Wi-Fi 5G X01
	NTT DOCOMO, INC.	home 5G HR01
	NTT DOCOMO, INC.	home 5G HR02
	NTT DOCOMO, INC.	Wi-Fi STATION SH-52A
	NTT DOCOMO, INC.	Wi-Fi STATION SH-52B
	NTT DOCOMO, INC.	Wi-Fi STATION SH-54C
	SoftBank	5G Mobile Router SH-U01
	SoftBank	Pocket WiFi 5G A503SH versions

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000043.html",
  "dc:date": "2026-03-25T18:41+09:00",
  "dcterms:issued": "2026-03-25T18:41+09:00",
  "dcterms:modified": "2026-03-25T18:41+09:00",
  "description": "SHARP routers do not perform authentication for some web APIs.\r\nThose web APIs provide device information, and the initial administrative password is based on a part of the device information.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/306.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eMissing authentication for critical function (CWE-306) - CVE-2026-32326\u003c/li\u003e\u003c/ul\u003eShota Zaizen reported this vulnerability to IPA.\r\nJPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000043.html",
  "sec:cpe": [
    {
      "#text": "cpe:/o:kddi:speed_wi-fi_5g_x01",
      "@product": "Speed Wi-Fi 5G X01",
      "@vendor": "KDDI",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/o:nttdocomo:home_5g_hr01",
      "@product": "home 5G HR01",
      "@vendor": "NTT DOCOMO, INC.",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/o:nttdocomo:home_5g_hr02",
      "@product": "home 5G HR02",
      "@vendor": "NTT DOCOMO, INC.",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/o:nttdocomo:wi-fi_station_sh-52a_firmware",
      "@product": "Wi-Fi STATION SH-52A",
      "@vendor": "NTT DOCOMO, INC.",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/o:nttdocomo:wi-fi_station_sh-52b_firmware",
      "@product": "Wi-Fi STATION SH-52B",
      "@vendor": "NTT DOCOMO, INC.",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/o:nttdocomo:wi-fi_station_sh-54c_firmware",
      "@product": "Wi-Fi STATION SH-54C",
      "@vendor": "NTT DOCOMO, INC.",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/o:softbank:5gmobile_wi-fi_router_sh-u01",
      "@product": "5G Mobile Router SH-U01",
      "@vendor": "SoftBank",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/o:softbank:pocket_wifi_5g_a503sh",
      "@product": "Pocket WiFi 5G A503SH versions",
      "@vendor": "SoftBank",
      "@version": "2.2"
    }
  ],
  "sec:cvss": {
    "@score": "5.7",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-000043",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN49524110/index.html",
      "@id": "JVN#49524110",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-32326",
      "@id": "CVE-2026-32326",
      "@source": "CVE"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-Other",
      "@title": "No Mapping(CWE-Other)"
    }
  ],
  "title": "SHARP routers missing authentication for some web APIs"
}

CVE-2026-32326 (GCVE-0-2026-32326)

Vulnerability from cvelistv5 – Published: 2026-03-25 07:38 – Updated: 2026-03-25 13:26

Summary

SHARP routers do not perform authentication for some web APIs. The device information may be retrieved without authentication. If the administrative password of the device is left as the initial one, the device may be taken over.

Severity ?

5.7 (Medium)


                        
                          CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

6.9 (Medium)


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

CWE

CWE-306 - Missing authentication for critical function

Assigner

jpcert

References

URL

Tags

	https://global.sharp/corporate/info/product-secur…
	https://jvn.jp/en/jp/JVN49524110/

Impacted products

Vendor

Product

Version

Sharp Corporation

home 5G HR01

Affected: 38JP_0_490 and earlier

Sharp Corporation	home 5G HR02	Affected: S5.A1.00 and earlier
Sharp Corporation	Wi-Fi STATION SH-52A	Affected: 38JP_2_03J and earlier
Sharp Corporation	Wi-Fi STATION SH-52B	Affected: S3.87.15 and earlierr
Sharp Corporation	Wi-Fi STATION SH-54C	Affected: S6.64.00 and earlier
Sharp Corporation	5G Mobile Router SH-U01	Affected: S4.48.00 and earlier
Sharp Corporation	Pocket WiFi 5G A503SH	Affected: S7.41.00 and earlier
Sharp Corporation	Speed Wi-Fi 5G X01	Affected: 3RJP_2_03I and earlier

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-32326",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-25T13:26:41.257984Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "versions": [
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            }
          ]
        },
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          "vendor": "Sharp Corporation",
          "versions": [
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            }
          ]
        },
        {
          "product": "Wi-Fi STATION SH-52A",
          "vendor": "Sharp Corporation",
          "versions": [
            {
              "status": "affected",
              "version": "38JP_2_03J and earlier"
            }
          ]
        },
        {
          "product": "Wi-Fi STATION SH-52B",
          "vendor": "Sharp Corporation",
          "versions": [
            {
              "status": "affected",
              "version": "S3.87.15 and earlierr"
            }
          ]
        },
        {
          "product": "Wi-Fi STATION SH-54C",
          "vendor": "Sharp Corporation",
          "versions": [
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        {
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          "versions": [
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        },
        {
          "product": "Pocket WiFi 5G A503SH",
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        },
        {
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          "vendor": "Sharp Corporation",
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        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 5.7,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
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          "scenarios": [
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        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://global.sharp/corporate/info/product-security/advisory-list/2026-002/"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN49524110/"
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  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
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Sightings

Author	Source	Type	Date

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.

Action not permitted

JVNDB-2026-000043

CVE-2026-32326 (GCVE-0-2026-32326)

Tags

Sightings

Nomenclature