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CNVD-2026-37302

Vulnerability from cnvd - Published: 2026-09-17

Title

TOTOLINK N600R堆栈缓冲区溢出漏洞

Description

TOTOLINK N600R是TOTOLINK品牌推出的一款面向家庭和小型办公环境的无线路由器‌。 TOTOLINK N600R存在堆栈缓冲区溢出漏洞，该漏洞源于cgi-bin/cstecgi.cgi文件中setSystemConfig函数未能正确处理Hostname参数，导致栈缓冲区越界写入。攻击者可利用该漏洞通过远程发送特制请求触发溢出，进而执行任意代码或导致设备崩溃。

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://www.totolink.net/

Reference

https://vuldb.com/vuln/395061

Impacted products

Name
TOTOLINK N600R 4.3.0cu.7647_B20210106

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-79911",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-79911"
    }
  },
  "description": "TOTOLINK N600R\u662fTOTOLINK\u54c1\u724c\u63a8\u51fa\u7684\u4e00\u6b3e\u9762\u5411\u5bb6\u5ead\u548c\u5c0f\u578b\u529e\u516c\u73af\u5883\u7684\u65e0\u7ebf\u8def\u7531\u5668\u200c\u3002\n\nTOTOLINK N600R\u5b58\u5728\u5806\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecgi-bin/cstecgi.cgi\u6587\u4ef6\u4e2dsetSystemConfig\u51fd\u6570\u672a\u80fd\u6b63\u786e\u5904\u7406Hostname\u53c2\u6570\uff0c\u5bfc\u81f4\u6808\u7f13\u51b2\u533a\u8d8a\u754c\u5199\u5165\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u8fdc\u7a0b\u53d1\u9001\u7279\u5236\u8bf7\u6c42\u89e6\u53d1\u6ea2\u51fa\uff0c\u8fdb\u800c\u6267\u884c\u4efb\u610f\u4ee3\u7801\u6216\u5bfc\u81f4\u8bbe\u5907\u5d29\u6e83\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://www.totolink.net/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-37302",
  "openTime": "2026-09-17",
  "products": {
    "product": "TOTOLINK N600R 4.3.0cu.7647_B20210106"
  },
  "referenceLink": "https://vuldb.com/vuln/395061",
  "serverity": "\u9ad8",
  "submitTime": "2026-08-28",
  "title": "TOTOLINK N600R\u5806\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2026-79911 (GCVE-0-2026-79911)

Vulnerability from cvelistv5 – Published: 2026-08-25 22:15 – Updated: 2026-08-27 14:34

Title

TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow

Summary

A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

Severity

10 (Critical)


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

10 (Critical)


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

10 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-27 13:31 UTC

CWE

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

Assigner

VulDB mitre root

References

6 references

URL	Tags
https://vuldb.com/vuln/395061	vdb-entrytechnical-description
https://vuldb.com/vuln/395061/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-79911	third-party-advisory
https://vuldb.com/submit/881258	third-party-advisory
https://github.com/dxz0069/WAVLINK-WN530H4-Comman…	exploit
https://www.totolink.net/	product

Impacted products

1 product

Vendor	Product	Version
TOTOLINK	N600R	Affected: 4.3.0cu.7647_B20210106 cpe:2.3:o:totolink:n600r_firmware::::::::

Credits

ST4R0002 (VulDB User)

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JSON

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                "id": "CVE-2026-79911",
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                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-27T13:31:59.101267Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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    ],
    "cna": {
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            "cpe:2.3:o:totolink:n600r_firmware:*:*:*:*:*:*:*:*"
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          ],
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          "versions": [
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            }
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      ],
      "credits": [
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          "lang": "en",
          "type": "reporter",
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        }
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      "descriptions": [
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          "lang": "en",
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        },
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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.
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CNVD-2026-37302

CVE-2026-79911 (GCVE-0-2026-79911)

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