Vulnerability-Lookup

CNVD-2026-32971

Vulnerability from cnvd - Published: 2026-08-21

Title

Tenda AC7堆栈缓冲区溢出漏洞

Description

Tenda AC7是一款专为宽带升级,路由更新换代的大户型家庭打造的1200m11ac双频无线路由器。 Tenda AC7存在堆栈缓冲区溢出漏洞，该漏洞源于/goform/AdvSetMacMtuWan功能未能正确验证wanSpeed参数的长度，攻击者可利用该漏洞通过构造恶意请求触发栈溢出，实现远程任意代码执行。

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.tenda.com.cn/

Reference

https://www.kdev.site/cve-request_005/

Impacted products

Name
Tenda AC7 V15.03.06.44

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-51846",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-51846"
    }
  },
  "description": "Tenda AC7\u662f\u4e00\u6b3e\u4e13\u4e3a\u5bbd\u5e26\u5347\u7ea7,\u8def\u7531\u66f4\u65b0\u6362\u4ee3\u7684\u5927\u6237\u578b\u5bb6\u5ead\u6253\u9020\u76841200m11ac\u53cc\u9891\u65e0\u7ebf\u8def\u7531\u5668\u3002\n\nTenda AC7\u5b58\u5728\u5806\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e/goform/AdvSetMacMtuWan\u529f\u80fd\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1wanSpeed\u53c2\u6570\u7684\u957f\u5ea6\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6784\u9020\u6076\u610f\u8bf7\u6c42\u89e6\u53d1\u6808\u6ea2\u51fa\uff0c\u5b9e\u73b0\u8fdc\u7a0b\u4efb\u610f\u4ee3\u7801\u6267\u884c\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.tenda.com.cn/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-32971",
  "openTime": "2026-08-21",
  "products": {
    "product": "Tenda AC7 V15.03.06.44"
  },
  "referenceLink": "https://www.kdev.site/cve-request_005/",
  "serverity": "\u9ad8",
  "submitTime": "2026-06-22",
  "title": "Tenda AC7\u5806\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2026-51846 (GCVE-0-2026-51846)

Vulnerability from cvelistv5 – Published: 2026-06-19 00:00 – Updated: 2026-06-22 17:15

Summary

In Tenda AC7 v15.03.06.44, the wanSpeed parameter of the route /goform/AdvSetMacMtuWan has a stack buffer overflow vulnerability that can lead to remote arbitrary code execution.

Severity

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 15:37 UTC

CWE

n/a
CWE-121 - Stack-based Buffer Overflow

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2326 records in the last 180 days details

References

1 reference

URL	Tags
https://www.kdev.site/cve-request_005/

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-51846",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-22T15:37:01.679343Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-121",
                "description": "CWE-121 Stack-based Buffer Overflow",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-22T17:15:47.887Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://www.kdev.site/cve-request_005/"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Tenda AC7 v15.03.06.44, the wanSpeed parameter of the route /goform/AdvSetMacMtuWan has a stack buffer overflow vulnerability that can lead to remote arbitrary code execution."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-19T16:53:10.613Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://www.kdev.site/cve-request_005/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-51846",
    "datePublished": "2026-06-19T00:00:00.000Z",
    "dateReserved": "2026-06-08T00:00:00.000Z",
    "dateUpdated": "2026-06-22T17:15:47.887Z",
    "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.

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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.
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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.

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