Vulnerability-Lookup

CNVD-2025-17678

Vulnerability from cnvd - Published: 2025-08-07

Title

TOTOLINK T6缺少身份验证漏洞

Description

TOTOLINK T6是中国吉翁电子（TOTOLINK）推出的无线双频路由器，支持MQTT协议和Telnet服务。 TOTOLINK T6存在缺少身份验证漏洞，该漏洞源于组件Telnet Service中/cgi-bin/cstecgi.cgi文件的setTelnetCfg函数对telnet_enabled参数（输入值为1时）未进行有效身份验证。目前没有详细的漏洞细节提供。

Severity

高

Formal description

目前厂商尚未发布升级程序修复该安全问题，详情见厂商官网： https://www.totolink.net/

Reference

https://vuldb.com/?id.316975 https://vuldb.com/?ctiid.316975 https://vuldb.com/?submit.617643 https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md#poc-http https://www.youtube.com/watch?v=XeKu3tfeSME https://www.totolink.net/

Impacted products

Name
TOTOLINK T6 4.1.5cu.748_B20211015

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-7862",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-7862"
    }
  },
  "description": "TOTOLINK T6\u662f\u4e2d\u56fd\u5409\u7fc1\u7535\u5b50\uff08TOTOLINK\uff09\u63a8\u51fa\u7684\u65e0\u7ebf\u53cc\u9891\u8def\u7531\u5668\uff0c\u652f\u6301MQTT\u534f\u8bae\u548cTelnet\u670d\u52a1\u3002\n\nTOTOLINK T6\u5b58\u5728\u7f3a\u5c11\u8eab\u4efd\u9a8c\u8bc1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7ec4\u4ef6Telnet Service\u4e2d/cgi-bin/cstecgi.cgi\u6587\u4ef6\u7684setTelnetCfg\u51fd\u6570\u5bf9telnet_enabled\u53c2\u6570\uff08\u8f93\u5165\u503c\u4e3a1\u65f6\uff09\u672a\u8fdb\u884c\u6709\u6548\u8eab\u4efd\u9a8c\u8bc1\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5c1a\u672a\u53d1\u5e03\u5347\u7ea7\u7a0b\u5e8f\u4fee\u590d\u8be5\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u89c1\u5382\u5546\u5b98\u7f51\uff1a\r\nhttps://www.totolink.net/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-17678",
  "openTime": "2025-08-07",
  "products": {
    "product": "TOTOLINK T6 4.1.5cu.748_B20211015"
  },
  "referenceLink": "https://vuldb.com/?id.316975\r\nhttps://vuldb.com/?ctiid.316975\r\nhttps://vuldb.com/?submit.617643\r\nhttps://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md\r\nhttps://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md#poc-http\r\nhttps://www.youtube.com/watch?v=XeKu3tfeSME\r\nhttps://www.totolink.net/",
  "serverity": "\u9ad8",
  "submitTime": "2025-07-23",
  "title": "TOTOLINK T6\u7f3a\u5c11\u8eab\u4efd\u9a8c\u8bc1\u6f0f\u6d1e"
}

CVE-2025-7862 (GCVE-0-2025-7862)

Vulnerability from cvelistv5 – Published: 2025-07-20 02:02 – Updated: 2025-07-22 14:14

Title

TOTOLINK T6 Telnet Service cstecgi.cgi setTelnetCfg missing authentication

Summary

A vulnerability has been found in TOTOLINK T6 4.1.5cu.748_B20211015 and classified as critical. Affected by this vulnerability is the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument telnet_enabled with the input 1 leads to missing authentication. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Severity

6.9 (Medium)


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

7.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R

7.3 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-22 14:14 UTC

CWE

CWE-306 - Missing Authentication
CWE-287 - Improper Authentication

Assigner

VulDB mitre root

References

7 references

URL	Tags
https://vuldb.com/?id.316975	vdb-entrytechnical-description
https://vuldb.com/?ctiid.316975	signaturepermissions-required
https://vuldb.com/?submit.617643	third-party-advisory
https://github.com/AnduinBrian/Public/blob/main/T…	related
https://github.com/AnduinBrian/Public/blob/main/T…	exploit
https://www.youtube.com/watch?v=XeKu3tfeSME	media-coverage
https://www.totolink.net/	product

Impacted products

1 product

Vendor	Product	Version
TOTOLINK	T6	Affected: 4.1.5cu.748_B20211015

Credits

reisen_1943 (VulDB User)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-7862",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-22T14:14:22.945222Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-22T14:14:27.289Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://www.youtube.com/watch?v=XeKu3tfeSME"
          },
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md#poc-http"
          },
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "Telnet Service"
          ],
          "product": "T6",
          "vendor": "TOTOLINK",
          "versions": [
            {
              "status": "affected",
              "version": "4.1.5cu.748_B20211015"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "reisen_1943 (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been found in TOTOLINK T6 4.1.5cu.748_B20211015 and classified as critical. Affected by this vulnerability is the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument telnet_enabled with the input 1 leads to missing authentication. The attack can be launched remotely. The exploit has been disclosed to the public and may be used."
        },
        {
          "lang": "de",
          "value": "In TOTOLINK T6 4.1.5cu.748_B20211015 wurde eine Schwachstelle gefunden. Sie wurde als kritisch eingestuft. Es geht um die Funktion setTelnetCfg der Datei /cgi-bin/cstecgi.cgi der Komponente Telnet Service. Durch Beeinflussen des Arguments telnet_enabled mit der Eingabe 1 mit unbekannten Daten kann eine missing authentication-Schwachstelle ausgenutzt werden. Der Angriff kann \u00fcber das Netzwerk erfolgen. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
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            "baseSeverity": "HIGH",
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          ]
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        {
          "descriptions": [
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      ],
      "providerMetadata": {
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      },
      "references": [
        {
          "name": "VDB-316975 | TOTOLINK T6 Telnet Service cstecgi.cgi setTelnetCfg missing authentication",
          "tags": [
            "vdb-entry",
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          ],
          "url": "https://vuldb.com/?id.316975"
        },
        {
          "name": "VDB-316975 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.316975"
        },
        {
          "name": "Submit #617643 | TOTOLINK T6 V4.1.5cu.748_B20211015 Missing Authentication",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.617643"
        },
        {
          "tags": [
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          "url": "https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/5.md#poc-http"
        },
        {
          "tags": [
            "media-coverage"
          ],
          "url": "https://www.youtube.com/watch?v=XeKu3tfeSME"
        },
        {
          "tags": [
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          ],
          "url": "https://www.totolink.net/"
        }
      ],
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          "time": "2025-07-19T00:00:00.000Z",
          "value": "Advisory disclosed"
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          "lang": "en",
          "time": "2025-07-19T02:00:00.000Z",
          "value": "VulDB entry created"
        },
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          "lang": "en",
          "time": "2025-07-19T06:14:27.000Z",
          "value": "VulDB entry last update"
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      ],
      "title": "TOTOLINK T6 Telnet Service cstecgi.cgi setTelnetCfg missing authentication"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-7862",
    "datePublished": "2025-07-20T02:02:08.415Z",
    "dateReserved": "2025-07-19T04:09:11.406Z",
    "dateUpdated": "2025-07-22T14:14:27.289Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.