Vulnerability-Lookup

CNVD-2025-17538

Vulnerability from cnvd - Published: 2025-08-05

Title

TOTOLINK T6缓冲区溢出漏洞

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，主要用于家庭及小型企业网络组网。 TOTOLINK T6存在缓冲区溢出漏洞，该漏洞源于MQTT Service中参数s未能正确验证输入数据的长度大小，攻击者可利用该漏洞在系统上执行任意代码或者导致拒绝服务。

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://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/6.md

Impacted products

Name
TOTOLINK T6 4.1.5cu.748_B20211015

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-7912",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-7912"
    }
  },
  "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\u548c Telnet\u670d\u52a1 \uff0c\u4e3b\u8981\u7528\u4e8e\u5bb6\u5ead\u53ca\u5c0f\u578b\u4f01\u4e1a\u7f51\u7edc\u7ec4\u7f51\u3002\n\nTOTOLINK T6\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eMQTT Service\u4e2d\u53c2\u6570s\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u8f93\u5165\u6570\u636e\u7684\u957f\u5ea6\u5927\u5c0f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u7cfb\u7edf\u4e0a\u6267\u884c\u4efb\u610f\u4ee3\u7801\u6216\u8005\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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-2025-17538",
  "openTime": "2025-08-05",
  "products": {
    "product": "TOTOLINK T6 4.1.5cu.748_B20211015"
  },
  "referenceLink": "https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/6.md",
  "serverity": "\u9ad8",
  "submitTime": "2025-07-25",
  "title": "TOTOLINK T6\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2025-7912 (GCVE-0-2025-7912)

Vulnerability from cvelistv5 – Published: 2025-07-20 23:02 – Updated: 2025-07-21 18:13

Title

TOTOLINK T6 MQTT Service recvSlaveUpgstatus buffer overflow

Summary

A vulnerability, which was classified as critical, has been found in TOTOLINK T6 4.1.5cu.748_B20211015. This issue affects the function recvSlaveUpgstatus of the component MQTT Service. The manipulation of the argument s leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Severity

8.7 (High)


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

8.8 (High)


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

8.8 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-21 18:12 UTC

CWE

CWE-120 - Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

6 references

URL	Tags
https://vuldb.com/?id.317027	vdb-entrytechnical-description
https://vuldb.com/?ctiid.317027	signaturepermissions-required
https://vuldb.com/?submit.618655	third-party-advisory
https://github.com/AnduinBrian/Public/blob/main/T…	related
https://github.com/AnduinBrian/Public/blob/main/T…	exploit
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-2025-7912",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-21T18:12:27.914715Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-21T18:13:05.998Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "MQTT 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, which was classified as critical, has been found in TOTOLINK T6 4.1.5cu.748_B20211015. This issue affects the function recvSlaveUpgstatus of the component MQTT Service. The manipulation of the argument s leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used."
        },
        {
          "lang": "de",
          "value": "Eine Schwachstelle wurde in TOTOLINK T6 4.1.5cu.748_B20211015 entdeckt. Sie wurde als kritisch eingestuft. Dies betrifft die Funktion recvSlaveUpgstatus der Komponente MQTT Service. Durch das Manipulieren des Arguments s mit unbekannten Daten kann eine buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff kann \u00fcber das Netzwerk passieren. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 9,
            "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-20T23:02:08.791Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-317027 | TOTOLINK T6 MQTT Service recvSlaveUpgstatus buffer overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.317027"
        },
        {
          "name": "VDB-317027 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.317027"
        },
        {
          "name": "Submit #618655 | TOTOLINK T6 V4.1.5cu.748_B20211015 Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.618655"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/6.md"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/6.md#poc"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.totolink.net/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-07-19T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2025-07-19T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2025-07-19T21:20:39.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "TOTOLINK T6 MQTT Service recvSlaveUpgstatus buffer overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-7912",
    "datePublished": "2025-07-20T23:02:08.791Z",
    "dateReserved": "2025-07-19T19:15:29.657Z",
    "dateUpdated": "2025-07-21T18:13:05.998Z",
    "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.