Vulnerability-Lookup

CNVD-2026-34620

Vulnerability from cnvd - Published: 2026-08-26

Title

Tenda CH22栈缓冲区溢出漏洞（CNVD-2026-34620）

Description

Tenda CH22是腾达（Tenda）公司推出的一款450M企业级无线路由器。 Tenda CH22存在栈缓冲区溢出漏洞，该漏洞源于/goform/QuickIndex文件中的formQuickIndex函数未能对mit_linktype参数进行有效校验。攻击者可利用该漏洞通过已认证低权限用户身份触发栈缓冲区溢出，从而在设备上执行任意代码，对系统造成破坏。

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://nvd.nist.gov/vuln/detail/CVE-2026-5156

Impacted products

Name
Tenda CH22 1.0.0.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-5156",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-5156"
    }
  },
  "description": "Tenda CH22\u662f\u817e\u8fbe\uff08Tenda\uff09\u516c\u53f8\u63a8\u51fa\u7684\u4e00\u6b3e450M\u4f01\u4e1a\u7ea7\u65e0\u7ebf\u8def\u7531\u5668\u3002\n\nTenda CH22\u5b58\u5728\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e/goform/QuickIndex\u6587\u4ef6\u4e2d\u7684formQuickIndex\u51fd\u6570\u672a\u80fd\u5bf9mit_linktype\u53c2\u6570\u8fdb\u884c\u6709\u6548\u6821\u9a8c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u5df2\u8ba4\u8bc1\u4f4e\u6743\u9650\u7528\u6237\u8eab\u4efd\u89e6\u53d1\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\uff0c\u4ece\u800c\u5728\u8bbe\u5907\u4e0a\u6267\u884c\u4efb\u610f\u4ee3\u7801\uff0c\u5bf9\u7cfb\u7edf\u9020\u6210\u7834\u574f\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-2026-34620",
  "openTime": "2026-08-26",
  "products": {
    "product": "Tenda CH22 1.0.0.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-5156",
  "serverity": "\u9ad8",
  "submitTime": "2026-04-07",
  "title": "Tenda CH22\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2026-34620\uff09"
}

CVE-2026-5156 (GCVE-0-2026-5156)

Vulnerability from cvelistv5 – Published: 2026-03-30 23:30 – Updated: 2026-03-31 14:04

Title

Tenda CH22 Parameter QuickIndex formQuickIndex stack-based overflow

Summary

A vulnerability was determined in Tenda CH22 1.0.0.1. This impacts the function formQuickIndex of the file /goform/QuickIndex of the component Parameter Handler. This manipulation of the argument mit_linktype causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

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 2026-03-31 14:04 UTC

CWE

CWE-121 - Stack-based Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB mitre root Scorecard

References

5 references

URL	Tags
https://vuldb.com/vuln/354188	vdb-entrytechnical-description
https://vuldb.com/vuln/354188/cti	signaturepermissions-required
https://vuldb.com/submit/780208	third-party-advisory
https://github.com/Litengzheng/vuldb_new/blob/mai…	exploit
https://www.tenda.com.cn/	product

Impacted products

1 product

Vendor	Product	Version
Tenda	CH22	Affected: 1.0.0.1 cpe:2.3:o:tenda:ch22_firmware::::::::

Credits

LtzHust2 (VulDB User)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5156",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T14:04:19.289779Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-31T14:04:30.211Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:tenda:ch22_firmware:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Parameter Handler"
          ],
          "product": "CH22",
          "vendor": "Tenda",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.0.1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "LtzHust2 (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was determined in Tenda CH22 1.0.0.1. This impacts the function formQuickIndex of the file /goform/QuickIndex of the component Parameter Handler. This manipulation of the argument mit_linktype causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized."
        }
      ],
      "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-121",
              "description": "Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-30T23:30:15.562Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-354188 | Tenda CH22 Parameter QuickIndex formQuickIndex stack-based overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/354188"
        },
        {
          "name": "VDB-354188 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/354188/cti"
        },
        {
          "name": "Submit #780208 | Tenda CH22 V1.0.0.1 Stack-based Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/780208"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_46/README.md"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.tenda.com.cn/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-03-30T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-03-30T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-03-30T15:38:29.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Tenda CH22 Parameter QuickIndex formQuickIndex stack-based overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-5156",
    "datePublished": "2026-03-30T23:30:15.562Z",
    "dateReserved": "2026-03-30T13:33:15.737Z",
    "dateUpdated": "2026-03-31T14:04:30.211Z",
    "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.

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.

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CNVD-2026-34620

CVE-2026-5156 (GCVE-0-2026-5156)

Tags

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Nomenclature

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