Vulnerability-Lookup

CNVD-2026-35661

Vulnerability from cnvd - Published: 2026-09-02

Title

Tenda W3 Wireless Router栈缓冲区溢出漏洞（CNVD-2026-35661）

Description

Tenda W3 Wireless Router是腾达推出的一款入墙式无线AP（无线接入点）。 Tenda W3 Wireless Router存在栈缓冲区溢出漏洞，该漏洞源于R7WebsSecurityHandler函数未能正确处理username参数，攻击者可利用该漏洞通过精心构造的HTTP请求造成拒绝服务(DoS)。

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://tenda.com.cn/

Reference

https://github.com/xhh0124/SemVulLLM/tree/main/W3/R7WebsSecurityHandler

Impacted products

Name
Tenda W3 Wireless Router v1.0.0.3(2204)

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-36794",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-36794"
    }
  },
  "description": "Tenda W3 Wireless Router\u662f\u817e\u8fbe\u63a8\u51fa\u7684\u4e00\u6b3e\u5165\u5899\u5f0f\u65e0\u7ebfAP\uff08\u65e0\u7ebf\u63a5\u5165\u70b9\uff09\u3002\n\nTenda W3 Wireless Router\u5b58\u5728\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eR7WebsSecurityHandler\u51fd\u6570\u672a\u80fd\u6b63\u786e\u5904\u7406username\u53c2\u6570\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u7cbe\u5fc3\u6784\u9020\u7684HTTP\u8bf7\u6c42\u9020\u6210\u62d2\u7edd\u670d\u52a1(DoS)\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://tenda.com.cn/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-35661",
  "openTime": "2026-09-02",
  "products": {
    "product": "Tenda W3 Wireless Router v1.0.0.3(2204)"
  },
  "referenceLink": "https://github.com/xhh0124/SemVulLLM/tree/main/W3/R7WebsSecurityHandler",
  "serverity": "\u9ad8",
  "submitTime": "2026-06-11",
  "title": "Tenda W3 Wireless Router\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2026-35661\uff09"
}

CVE-2026-36794 (GCVE-0-2026-36794)

Vulnerability from cvelistv5 – Published: 2026-06-09 00:00 – Updated: 2026-06-10 17:55

Summary

Shenzhen Tenda Technology Co., Ltd Tenda W3 Wireless Router v1.0.0.3(2204) was discovered to contain multiple stack overflows in the R7WebsSecurityHandler function via the username and password parameters. These vulnerabilities allow attackers to cause a Denial of Service (DoS) via a crafted HTTP 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 2026-06-10 17:54 UTC

CWE

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

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/xhh0124/SemVulLLM/tree/main/W3…

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-2026-36794",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T17:54:31.157174Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-121",
                "description": "CWE-121 Stack-based Buffer Overflow",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-10T17:55:14.830Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/xhh0124/SemVulLLM/tree/main/W3/R7WebsSecurityHandler"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Shenzhen Tenda Technology Co., Ltd Tenda W3 Wireless Router v1.0.0.3(2204) was discovered to contain multiple stack overflows in the R7WebsSecurityHandler function via the username and password parameters. These vulnerabilities allow attackers to cause a Denial of Service (DoS) via a crafted HTTP request."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-09T18:12:57.451Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/xhh0124/SemVulLLM/tree/main/W3/R7WebsSecurityHandler"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-36794",
    "datePublished": "2026-06-09T00:00:00.000Z",
    "dateReserved": "2026-04-06T00:00:00.000Z",
    "dateUpdated": "2026-06-10T17:55:14.830Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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CNVD-2026-35661

CVE-2026-36794 (GCVE-0-2026-36794)

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