Vulnerability-Lookup

JVNDB-2026-029323

Vulnerability from jvndb - Published: 2026-08-21 06:55 - Updated:2026-08-21 06:55

Severity

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

Summary

Multiple SEIKO EPSON printers and scanners keep already revoked root certificates

Details

Multiple printers and scanners provided by SEIKO EPSON CORPORATION contain the following vulnerability.

Remaining revoked root certificates (CWE-296) - CVE-2026-73542

Agni Athreya, CyberArch Student Researcher of Carl Vinson Institute of Government at University of Georgia reported this vulnerability to SEIKO EPSON CORPORATION and coordinated. After the coordination was completed, SEIKO EPSON CORPORATION reported the case to JPCERT/CC to notify users of the solution through JVN.

References

Type

URL

	JVN	https://jvn.jp/en/vu/JVNVU91609598/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-73542
	Improper Following of a Certificate's Chain of Trust(CWE-296)	https://cwe.mitre.org/data/definitions/296.html

Impacted products

Vendor

Product

SEIKO EPSON CORPORATION

(Multiple Products)

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-029323.html",
  "dc:date": "2026-08-21T15:55+09:00",
  "dcterms:issued": "2026-08-21T15:55+09:00",
  "dcterms:modified": "2026-08-21T15:55+09:00",
  "description": "Multiple printers and scanners provided by SEIKO EPSON CORPORATION contain the following vulnerability.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/296.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eRemaining revoked root certificates (CWE-296) - CVE-2026-73542\u003c/li\u003e\u003c/ul\u003eAgni Athreya, CyberArch Student Researcher of Carl Vinson Institute of Government at University of Georgia reported this vulnerability to SEIKO EPSON CORPORATION and coordinated. After the coordination was completed, SEIKO EPSON CORPORATION reported the case to JPCERT/CC to notify users of the solution through JVN.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-029323.html",
  "sec:cpe": {
    "#text": "cpe:/a:epson:multiple_product",
    "@product": "(Multiple Products)",
    "@vendor": "SEIKO EPSON CORPORATION",
    "@version": "2.2"
  },
  "sec:cvss": {
    "@score": "3.7",
    "@severity": "Low",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-029323",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/vu/JVNVU91609598/index.html",
      "@id": "JVNVU#91609598",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-73542",
      "@id": "CVE-2026-73542",
      "@source": "CVE"
    },
    {
      "#text": "https://cwe.mitre.org/data/definitions/296.html",
      "@id": "CWE-296",
      "@title": "Improper Following of a Certificate\u0027s Chain of Trust(CWE-296)"
    }
  ],
  "title": "Multiple SEIKO EPSON printers and scanners keep already revoked root certificates"
}

CVE-2026-73542 (GCVE-0-2026-73542)

Vulnerability from cvelistv5 – Published: 2026-08-20 05:16 – Updated: 2026-08-20 15:26

Summary

Multiple SEIKO EPSON printers and scanners contain revoked root certificates. A man-in-the-middle attack may allow an attacker to obtain communication data transmitted by the product. As for the details of the affected products and versions, refer to the vendor's information.

Severity

3.7 (Low)


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

6.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 15:05 UTC

CWE

CWE-296 - Improper Following of a Certificate's Chain of Trust

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.epson.jp/news/info/a-security202608.htm
https://jvn.jp/en/vu/JVNVU91609598/

Impacted products

1 product

Vendor	Product	Version
SEIKO EPSON CORPORATION	Multiple SEIKO EPSON printers and scanners	Affected: see the information provided by the vendor

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-73542",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-20T15:05:11.806045Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-20T15:26:27.771Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Multiple SEIKO EPSON printers and scanners",
          "vendor": "SEIKO EPSON CORPORATION",
          "versions": [
            {
              "status": "affected",
              "version": "see the information provided by the vendor"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Multiple SEIKO EPSON printers and scanners contain revoked root certificates. A man-in-the-middle attack may allow an attacker to obtain communication data transmitted by the product. As for the details of the affected products and versions, refer to the vendor\u0027s information."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-296",
              "description": "Improper Following of a Certificate\u0027s Chain of Trust",
              "lang": "en-US",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-20T05:16:14.864Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://www.epson.jp/news/info/a-security202608.htm"
        },
        {
          "url": "https://jvn.jp/en/vu/JVNVU91609598/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2026-73542",
    "datePublished": "2026-08-20T05:16:14.864Z",
    "dateReserved": "2026-08-17T04:36:05.953Z",
    "dateUpdated": "2026-08-20T15:26:27.771Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

JVNDB-2026-029323

CVE-2026-73542 (GCVE-0-2026-73542)

Tags

Sightings

Nomenclature