jvndb - jvndb-2026-000001

JVNDB-2026-000001

Vulnerability from jvndb - Published: 2026-01-07 14:19 - Updated:2026-01-07 14:19

Severity ?

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

Summary

Origin validation error vulnerability in Fujitsu Security Solution AuthConductor Client Basic V2

Details

Fujitsu Security Solution AuthConductor Client Basic V2 provided by Fujitsu Client Computing Limited contains the following vulnerability.

Origin validation error (CWE-346) - CVE-2026-20893

MASAHIRO IIDA of LAC Co., Ltd. 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/JVN24626628/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-20893
	No Mapping(CWE-Other)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

Fujitsu Client Computing Limited

Fujitsu Security Solution AuthConductor Client Basic V2

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000001.html",
  "dc:date": "2026-01-07T14:19+09:00",
  "dcterms:issued": "2026-01-07T14:19+09:00",
  "dcterms:modified": "2026-01-07T14:19+09:00",
  "description": "Fujitsu Security Solution AuthConductor Client Basic V2 provided by Fujitsu Client Computing Limited contains the following vulnerability.\r\n\u003cul\u003e\u003cli\u003eOrigin validation error (CWE-346) - CVE-2026-20893\u003c/li\u003e\u003c/ul\u003eMASAHIRO IIDA of LAC Co., Ltd. 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-2026-000001.html",
  "sec:cpe": {
    "#text": "cpe:/a:misc:fujitsuclientcomputing_fujitsusecuritysolutionauthconductorclientbasicv2",
    "@product": "Fujitsu Security Solution AuthConductor Client Basic V2",
    "@vendor": "Fujitsu Client Computing Limited",
    "@version": "2.2"
  },
  "sec:cvss": {
    "@score": "7.8",
    "@severity": "High",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-000001",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN24626628/index.html",
      "@id": "JVN#24626628",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-20893",
      "@id": "CVE-2026-20893",
      "@source": "CVE"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-Other",
      "@title": "No Mapping(CWE-Other)"
    }
  ],
  "title": "Origin validation error vulnerability in Fujitsu Security Solution AuthConductor Client Basic V2"
}

CVE-2026-20893 (GCVE-0-2026-20893)

Vulnerability from cvelistv5 – Published: 2026-01-07 03:16 – Updated: 2026-01-07 14:38

Summary

Origin validation error issue exists in Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier. If this vulnerability is exploited, an attacker who can log in to the Windows system where the affected product is installed may execute arbitrary code with SYSTEM privilege and/or modify the registry value.

Severity ?

7.8 (High)


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

8.5 (High)


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

CWE

CWE-346 - Origin validation error

Assigner

jpcert

References

URL

Tags

	https://www.fmworld.net/biz/common/info/202601acc/
	https://jvn.jp/en/jp/JVN24626628/

Impacted products

	Vendor	Product	Version
	Fujitsu Client Computing Limited	Fujitsu Security Solution AuthConductor Client Basic V2	Affected: 2.0.25.0 and earlier

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20893",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-07T14:38:13.907901Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-07T14:38:27.948Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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      }
    ],
    "cna": {
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          "vendor": "Fujitsu Client Computing Limited",
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      ],
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        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
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          "scenarios": [
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        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
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      "references": [
        {
          "url": "https://www.fmworld.net/biz/common/info/202601acc/"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN24626628/"
        }
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  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
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    "datePublished": "2026-01-07T03:16:19.093Z",
    "dateReserved": "2025-12-22T02:14:24.139Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-2026-000001

CVE-2026-20893 (GCVE-0-2026-20893)

Tags

Sightings

Nomenclature