Vulnerability-Lookup

JVNDB-2026-000018

Vulnerability from jvndb - Published: 2026-01-30 14:23 - Updated:2026-01-30 14:23

Severity ?

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

Summary

Undocumented "TelnetEnable" functionality of End of Service NETGEAR products

Details

Some end of service NETGEAR products provide "TelnetEnable" functionality, which allows a magic packet to activate telnet service on the box.

Inclusion of Undocumented Features or Chicken Bits (CWE-1242) - CVE-2026-24714

Misato Ito, Daichi Uezono, Ryu Kuki, Iwaki Miyamoto, Takayuki Sasaki, and Katsunari Yoshioka of Yokohama National University reported the issue on NETGEAR PR2000 to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN46722282/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-24714
	No Mapping(CWE-Other)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

NETGEAR

PR2000 firmware

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000018.html",
  "dc:date": "2026-01-30T14:23+09:00",
  "dcterms:issued": "2026-01-30T14:23+09:00",
  "dcterms:modified": "2026-01-30T14:23+09:00",
  "description": "Some end of service NETGEAR products provide \"TelnetEnable\" functionality, which allows a magic packet to activate telnet service on the box.\u003cul\u003e\u003cli\u003eInclusion of Undocumented Features or Chicken Bits (CWE-1242) - CVE-2026-24714\u003c/li\u003e\u003c/ul\u003eMisato Ito, Daichi Uezono, Ryu Kuki, Iwaki Miyamoto, Takayuki Sasaki, and Katsunari Yoshioka of Yokohama National University reported the issue on NETGEAR PR2000 to IPA.\r\nJPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000018.html",
  "sec:cpe": {
    "#text": "cpe:/o:netgear:pr2000_firmware",
    "@product": "PR2000 firmware",
    "@vendor": "NETGEAR",
    "@version": "2.2"
  },
  "sec:cvss": {
    "@score": "7.5",
    "@severity": "High",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-000018",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN46722282/index.html",
      "@id": "JVN#46722282",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-24714",
      "@id": "CVE-2026-24714",
      "@source": "CVE"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-Other",
      "@title": "No Mapping(CWE-Other)"
    }
  ],
  "title": "Undocumented \"TelnetEnable\" functionality of End of Service NETGEAR products"
}

CVE-2026-24714 (GCVE-0-2026-24714)

Vulnerability from cvelistv5 – Published: 2026-01-30 03:53 – Updated: 2026-01-30 17:59 Unsupported When Assigned

Summary

Some end of service NETGEAR products provide "TelnetEnable" functionality, which allows a magic packet to activate telnet service on the box.

Severity ?

7.5 (High)


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

8.7 (High)


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

CWE

CWE-1242 - Inclusion of undocumented features or chicken bits

Assigner

jpcert

References

URL

Tags

	https://www.netgear.com/about/eos/
	https://jvn.jp/en/jp/JVN46722282/

Impacted products

	Vendor	Product	Version
	NETGEAR	NETGEAR products	Affected: versions which provide "TelnetEnable" functionality

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-24714",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-30T17:59:24.138913Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-30T17:59:45.410Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "NETGEAR products",
          "vendor": "NETGEAR",
          "versions": [
            {
              "status": "affected",
              "version": "versions which provide \"TelnetEnable\" functionality"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Some end of service NETGEAR products provide \"TelnetEnable\" functionality, which allows a magic packet to activate telnet service on the box."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1242",
              "description": "Inclusion of undocumented features or chicken bits",
              "lang": "en-US",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-30T03:53:30.144Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://www.netgear.com/about/eos/"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN46722282/"
        }
      ],
      "tags": [
        "unsupported-when-assigned"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2026-24714",
    "datePublished": "2026-01-30T03:53:30.144Z",
    "dateReserved": "2026-01-26T05:24:46.172Z",
    "dateUpdated": "2026-01-30T17:59:45.410Z",
    "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-2026-000018

CVE-2026-24714 (GCVE-0-2026-24714)

Tags

Sightings

Nomenclature