TOTOLINK EX200 lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflow

{
  "id": "affcace30ff02fd8339eec246931c28548b21b7a70c71cbd33110a3e9c4123e7",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-114382",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "TOTOLINK EX200 lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflow",
    "summary": "A security flaw has been discovered in TOTOLINK EX200 5.2.3c.7200. This affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. The manipulation of the argument Comment results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.",
    "evidence": "cve:CVE-2026-114382",
    "products": [
      {
        "name": {
          "value": "EX200",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-114382",
      "aliases": [
        "CVE-2026-114382"
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      "metrics": [
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          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "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"
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          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
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          "cvssV2_0": {
            "version": "2.0",
            "baseScore": 10,
            "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"
          }
        }
      ],
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:totolink:ex200_firmware:*:*:*:*:*:*:*:*"
          ],
          "vendor": "TOTOLINK",
          "modules": [
            "lan.so"
          ],
          "product": "EX200",
          "versions": [
            {
              "status": "affected",
              "version": "5.2.3c.7200"
            }
          ]
        }
      ],
      "modified": "2026-10-28T01:59:47.537Z",
      "provider": "cve",
      "references": [
        "https://vuldb.com/vuln/424741",
        "https://vuldb.com/vuln/424741/cti",
        "https://vuldb.com/cve/CVE-2026-114382",
        "https://vuldb.com/submit/1019881",
        "https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE1/report.md",
        "https://www.totolink.net/"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
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                    "id": "CVE-2026-114382",
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                        "Exploitation": "poc"
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                      {
                        "Automatable": "yes"
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                        "Technical Impact": "total"
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                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-28T01:59:30.566483Z"
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            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-28T01:59:47.537Z"
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        "cna": {
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          "dateUpdated": "2026-10-21T21:30:10.698Z"
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    "related_cves": [
      {
        "value": "CVE-2026-114382",
        "evidence": "/cveMetadata/cveId"
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    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 406249,
  "published_at": "2026-10-21T21:30:10.698+00:00"
}