Vulnerability-Lookup

CNVD-2026-16680

Vulnerability from cnvd - Published: 2026-04-09

Title

Totolink A3300R命令注入漏洞（CNVD-2026-16680）

Description

Totolink A3300R是Totolink公司的一款无线路由器产品。 Totolink A3300R 17.0.0cu.557_b20221024版本存在命令注入漏洞，该漏洞源于其参数处理器组件中/cgi-bin/cstecgi.cgi文件的setSmartQosCfg函数对qos_up_bw参数处理不当。攻击者可利用该漏洞通过远程注入并执行任意命令。

Severity

中

Patch Name

Totolink A3300R命令注入漏洞（CNVD-2026-16680）的补丁

Patch Description

Formal description

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： https://vuldb.com/vuln/354127

Reference

https://vuldb.com/vuln/354127 https://vuldb.com/vuln/354127/cti https://vuldb.com/submit/779129 https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.md https://www.totolink.net/

Impacted products

Name
TOTOLINK A3300R 17.0.0cu.557b20221024

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-5102",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-5102"
    }
  },
  "description": "Totolink A3300R\u662fTotolink\u516c\u53f8\u7684\u4e00\u6b3e\u65e0\u7ebf\u8def\u7531\u5668\u4ea7\u54c1\u3002\n\nTotolink A3300R 17.0.0cu.557_b20221024\u7248\u672c\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5176\u53c2\u6570\u5904\u7406\u5668\u7ec4\u4ef6\u4e2d/cgi-bin/cstecgi.cgi\u6587\u4ef6\u7684setSmartQosCfg\u51fd\u6570\u5bf9qos_up_bw\u53c2\u6570\u5904\u7406\u4e0d\u5f53\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u8fdc\u7a0b\u6ce8\u5165\u5e76\u6267\u884c\u4efb\u610f\u547d\u4ee4\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttps://vuldb.com/vuln/354127",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-16680",
  "openTime": "2026-04-09",
  "patchDescription": "Totolink A3300R\u662fTotolink\u516c\u53f8\u7684\u4e00\u6b3e\u65e0\u7ebf\u8def\u7531\u5668\u4ea7\u54c1\u3002\r\n\r\nTotolink A3300R 17.0.0cu.557_b20221024\u7248\u672c\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5176\u53c2\u6570\u5904\u7406\u5668\u7ec4\u4ef6\u4e2d/cgi-bin/cstecgi.cgi\u6587\u4ef6\u7684setSmartQosCfg\u51fd\u6570\u5bf9qos_up_bw\u53c2\u6570\u5904\u7406\u4e0d\u5f53\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u8fdc\u7a0b\u6ce8\u5165\u5e76\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\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff08CNVD-2026-16680\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "TOTOLINK A3300R 17.0.0cu.557b20221024"
  },
  "referenceLink": "https://vuldb.com/vuln/354127\r\nhttps://vuldb.com/vuln/354127/cti\r\nhttps://vuldb.com/submit/779129\r\nhttps://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.md\r\nhttps://www.totolink.net/",
  "serverity": "\u4e2d",
  "submitTime": "2026-04-08",
  "title": "Totolink A3300R\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff08CNVD-2026-16680\uff09"
}

CVE-2026-5102 (GCVE-0-2026-5102)

Vulnerability from cvelistv5 – Published: 2026-03-30 00:00 – Updated: 2026-03-30 15:56

Title

Totolink A3300R Parameter cstecgi.cgi setSmartQosCfg command injection

Summary

A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. This vulnerability affects the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument qos_up_bw results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

6.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

6.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-30 15:55 UTC

CWE

CWE-77 - Command Injection
CWE-74 - Injection

Assigner

VulDB mitre root

References

5 references

URL	Tags
https://vuldb.com/vuln/354127	vdb-entrytechnical-description
https://vuldb.com/vuln/354127/cti	signaturepermissions-required
https://vuldb.com/submit/779129	third-party-advisory
https://github.com/Litengzheng/vul_db/blob/main/A…	exploit
https://www.totolink.net/	product

Impacted products

1 product

Vendor	Product	Version
Totolink	A3300R	Affected: 17.0.0cu.557_b20221024 cpe:2.3:o:totolink:a3300r_firmware::::::::

Credits

LtzHuster2 (VulDB User)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5102",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-30T15:55:49.220268Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-30T15:56:03.600Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:totolink:a3300r_firmware:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Parameter Handler"
          ],
          "product": "A3300R",
          "vendor": "Totolink",
          "versions": [
            {
              "status": "affected",
              "version": "17.0.0cu.557_b20221024"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "LtzHuster2 (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. This vulnerability affects the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument qos_up_bw results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 6.5,
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-77",
              "description": "Command Injection",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-74",
              "description": "Injection",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-30T00:00:20.436Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-354127 | Totolink A3300R Parameter cstecgi.cgi setSmartQosCfg command injection",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/354127"
        },
        {
          "name": "VDB-354127 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/354127/cti"
        },
        {
          "name": "Submit #779129 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injection",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/779129"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.md"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.totolink.net/"
        }
      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-03-29T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-03-29T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-03-29T19:56:07.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Totolink A3300R Parameter cstecgi.cgi setSmartQosCfg command injection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-5102",
    "datePublished": "2026-03-30T00:00:20.436Z",
    "dateReserved": "2026-03-29T17:50:47.089Z",
    "dateUpdated": "2026-03-30T15:56:03.600Z",
    "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.

Detection rules are retrieved from Rulezet.

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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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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CNVD-2026-16680

CVE-2026-5102 (GCVE-0-2026-5102)

Tags

Sightings

Nomenclature

Related by attack behaviour