Vulnerability-Lookup

CNVD-2026-18568

Vulnerability from cnvd - Published: 2026-04-23

Title

ToToLink A3300R cstecgi.cgi url参数命令注入漏洞

Description

ToToLink A3300R是一款路由器产品，提供网络连接和数据传输功能。 ToToLink A3300R存在命令注入漏洞，该漏洞源于未能正确验证/cgi-bin/cstecgi.cgi的url参数输入，攻击者可利用该漏洞通过发送特制请求执行任意命令。

Severity

中

Patch Name

ToToLink A3300R cstecgi.cgi url参数命令注入漏洞的补丁

Patch Description

ToToLink A3300R是一款路由器产品，提供网络连接和数据传输功能。 ToToLink A3300R存在命令注入漏洞，该漏洞源于未能正确验证/cgi-bin/cstecgi.cgi的url参数输入，攻击者可利用该漏洞通过发送特制请求执行任意命令。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-url-cmd-injection

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-31171

Impacted products

Name
TOTOLINK A3300R V17.0.0cu.557_B20221024

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-31171",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-31171"
    }
  },
  "description": "ToToLink A3300R\u662f\u4e00\u6b3e\u8def\u7531\u5668\u4ea7\u54c1\uff0c\u63d0\u4f9b\u7f51\u7edc\u8fde\u63a5\u548c\u6570\u636e\u4f20\u8f93\u529f\u80fd\u3002\n\nToToLink A3300R\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1/cgi-bin/cstecgi.cgi\u7684url\u53c2\u6570\u8f93\u5165\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u53d1\u9001\u7279\u5236\u8bf7\u6c42\u6267\u884c\u4efb\u610f\u547d\u4ee4\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-url-cmd-injection",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-18568",
  "openTime": "2026-04-23",
  "patchDescription": "ToToLink A3300R\u662f\u4e00\u6b3e\u8def\u7531\u5668\u4ea7\u54c1\uff0c\u63d0\u4f9b\u7f51\u7edc\u8fde\u63a5\u548c\u6570\u636e\u4f20\u8f93\u529f\u80fd\u3002\r\n\r\nToToLink A3300R\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1/cgi-bin/cstecgi.cgi\u7684url\u53c2\u6570\u8f93\u5165\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u53d1\u9001\u7279\u5236\u8bf7\u6c42\u6267\u884c\u4efb\u610f\u547d\u4ee4\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "ToToLink A3300R cstecgi.cgi url\u53c2\u6570\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "TOTOLINK A3300R V17.0.0cu.557_B20221024"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-31171",
  "serverity": "\u4e2d",
  "submitTime": "2026-04-24",
  "title": "ToToLink A3300R cstecgi.cgi url\u53c2\u6570\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e"
}

CVE-2026-31171 (GCVE-0-2026-31171)

Vulnerability from cvelistv5 – Published: 2026-04-23 00:00 – Updated: 2026-04-23 18:43

Summary

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the url parameter to /cgi-bin/cstecgi.cgi.

Severity

6.5 (Medium)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-23 18:43 UTC

CWE

n/a
CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')

Assigner

mitre mitre root Scorecard

References

1 reference

URL	Tags
https://github.com/Svigo-o/TOTOLINK-Vul/tree/main…

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-31171",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-23T18:43:04.859484Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-77",
                "description": "CWE-77 Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-23T18:43:47.307Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-url-cmd-injection"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the url parameter to /cgi-bin/cstecgi.cgi."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-23T17:42:14.245Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-url-cmd-injection"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-31171",
    "datePublished": "2026-04-23T00:00:00.000Z",
    "dateReserved": "2026-03-09T00:00:00.000Z",
    "dateUpdated": "2026-04-23T18:43:47.307Z",
    "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.
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.
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CNVD-2026-18568

CVE-2026-31171 (GCVE-0-2026-31171)

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