Vulnerability-Lookup

CNVD-2026-04539

Vulnerability from cnvd - Published: 2026-01-16

Title

Tenda AX-1806路由器栈溢出漏洞

Description

Tenda AX-1806是中国腾达(Tenda)公司的一个WiFi6无线路由器。 Tenda AX-1806 v1.0.0.1版本中存在栈溢出漏洞。该漏洞是由于受影响产品的某个处理函数(sub_65A28)在解析serverName参数时，未对输入长度进行有效验证。攻击者可利用该漏洞通过构造超长字符串覆盖栈内存，进而劫持程序执行流。

Severity

高

Formal description

厂商尚未发布漏洞修复程序，请及时关注更新: https://github.com/0-fool/VulnbyCola/blob/main/Tenda/AX-1806/7/1.md

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-71021

Impacted products

Name
Tenda AX-1806 v1.0.0.1

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-71021",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-71021"
    }
  },
  "description": "Tenda AX-1806\u662f\u4e2d\u56fd\u817e\u8fbe(Tenda)\u516c\u53f8\u7684\u4e00\u4e2aWiFi6\u65e0\u7ebf\u8def\u7531\u5668\u3002\n\nTenda AX-1806 v1.0.0.1\u7248\u672c\u4e2d\u5b58\u5728\u6808\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u662f\u7531\u4e8e\u53d7\u5f71\u54cd\u4ea7\u54c1\u7684\u67d0\u4e2a\u5904\u7406\u51fd\u6570(sub_65A28)\u5728\u89e3\u6790serverName\u53c2\u6570\u65f6\uff0c\u672a\u5bf9\u8f93\u5165\u957f\u5ea6\u8fdb\u884c\u6709\u6548\u9a8c\u8bc1\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6784\u9020\u8d85\u957f\u5b57\u7b26\u4e32\u8986\u76d6\u6808\u5185\u5b58\uff0c\u8fdb\u800c\u52ab\u6301\u7a0b\u5e8f\u6267\u884c\u6d41\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0:\r\nhttps://github.com/0-fool/VulnbyCola/blob/main/Tenda/AX-1806/7/1.md",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-04539",
  "openTime": "2026-01-16",
  "products": {
    "product": "Tenda AX-1806 v1.0.0.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-71021",
  "serverity": "\u9ad8",
  "submitTime": "2026-01-16",
  "title": "Tenda AX-1806\u8def\u7531\u5668\u6808\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2025-71021 (GCVE-0-2025-71021)

Vulnerability from cvelistv5 – Published: 2026-01-14 00:00 – Updated: 2026-01-14 19:43

Summary

Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the serverName parameter of the sub_65A28 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

Severity

7.5 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 19:42 UTC

CWE

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

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/0-fool/VulnbyCola/blob/main/Te…

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-71021",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T19:42:03.033736Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-121",
                "description": "CWE-121 Stack-based Buffer Overflow",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T19:43:05.721Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the serverName parameter of the sub_65A28 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-14T17:17:36.408Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/0-fool/VulnbyCola/blob/main/Tenda/AX-1806/7/1.md"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-71021",
    "datePublished": "2026-01-14T00:00:00.000Z",
    "dateReserved": "2026-01-09T00:00:00.000Z",
    "dateUpdated": "2026-01-14T19:43:05.721Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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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.

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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CNVD-2026-04539

CVE-2025-71021 (GCVE-0-2025-71021)

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