Vulnerability-Lookup

CNVD-2026-32749

Vulnerability from cnvd - Published: 2026-08-19

Title

TOTOLINK WA300缓冲区溢出漏洞

Description

TOTOLINK WA300是一款‌300Mbps单频（2.4GHz）入墙式无线AP（面板接入点）‌，采用标准86型底盒安装设计，主要用于酒店、宿舍及办公场景的无线覆盖。 TOTOLINK WA300存在缓冲区溢出漏洞，该漏洞源于/cgi-bin/cstecgi.cgi文件中loginauth函数未能正确处理http_host参数，攻击者可利用该漏洞通过远程发送特制请求触发堆栈破坏。

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://www.totolink.net/

Reference

https://vuldb.com/vuln/360895

Impacted products

Name
TOTOLINK WA300 5.2cu.7112_B20190227

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-7719",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-7719"
    }
  },
  "description": "TOTOLINK WA300\u662f\u4e00\u6b3e\u200c300Mbps\u5355\u9891\uff082.4GHz\uff09\u5165\u5899\u5f0f\u65e0\u7ebfAP\uff08\u9762\u677f\u63a5\u5165\u70b9\uff09\u200c\uff0c\u91c7\u7528\u6807\u51c686\u578b\u5e95\u76d2\u5b89\u88c5\u8bbe\u8ba1\uff0c\u4e3b\u8981\u7528\u4e8e\u9152\u5e97\u3001\u5bbf\u820d\u53ca\u529e\u516c\u573a\u666f\u7684\u65e0\u7ebf\u8986\u76d6\u3002\n\nTOTOLINK WA300\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e/cgi-bin/cstecgi.cgi\u6587\u4ef6\u4e2dloginauth\u51fd\u6570\u672a\u80fd\u6b63\u786e\u5904\u7406http_host\u53c2\u6570\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u8fdc\u7a0b\u53d1\u9001\u7279\u5236\u8bf7\u6c42\u89e6\u53d1\u5806\u6808\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://www.totolink.net/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-32749",
  "openTime": "2026-08-19",
  "products": {
    "product": "TOTOLINK WA300 5.2cu.7112_B20190227"
  },
  "referenceLink": "https://vuldb.com/vuln/360895",
  "serverity": "\u9ad8",
  "submitTime": "2026-05-06",
  "title": "TOTOLINK WA300\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2026-7719 (GCVE-0-2026-7719)

Vulnerability from cvelistv5 – Published: 2026-05-04 01:30 – Updated: 2026-05-05 18:57

Title

Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow

Summary

A security flaw has been discovered in Totolink WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Severity

9.3 (Critical)


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

9.8 (Critical)


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

9.8 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/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 2026-05-05 18:56 UTC

CWE

CWE-120 - Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

5 references

URL	Tags
https://vuldb.com/vuln/360895	vdb-entrytechnical-description
https://vuldb.com/vuln/360895/cti	signaturepermissions-required
https://vuldb.com/submit/807197	third-party-advisory
https://lavender-bicycle-a5a.notion.site/TOTOLINK…	exploit
https://www.totolink.net/	product

Impacted products

1 product

Vendor	Product	Version
Totolink	WA300	Affected: 5.2cu.7112_B20190227 cpe:2.3:o:totolink:wa300_firmware::::::::

Credits

wxhwxhwxh_mie (VulDB User)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-7719",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-05T18:56:03.738184Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-05T18:57:04.238Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:totolink:wa300_firmware:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "POST Request Handler"
          ],
          "product": "WA300",
          "vendor": "Totolink",
          "versions": [
            {
              "status": "affected",
              "version": "5.2cu.7112_B20190227"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "wxhwxhwxh_mie (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security flaw has been discovered in Totolink WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 10,
            "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-04T01:30:16.375Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-360895 | Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/360895"
        },
        {
          "name": "VDB-360895 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/360895/cti"
        },
        {
          "name": "Submit #807197 | Totolink WA300 WA300 V5.2cu.7112_B20190227 Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/807197"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://lavender-bicycle-a5a.notion.site/TOTOLINK-WA300-loginAuth-34553a41781f8050b8ffc9e90a103cd5"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.totolink.net/"
        }
      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-05-03T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-05-03T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-05-03T10:14:48.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-7719",
    "datePublished": "2026-05-04T01:30:16.375Z",
    "dateReserved": "2026-05-03T08:09:40.154Z",
    "dateUpdated": "2026-05-05T18:57:04.238Z",
    "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.

Action not permitted

CNVD-2026-32749

CVE-2026-7719 (GCVE-0-2026-7719)

Tags

Sightings

Nomenclature