FKIE_CVE-2026-24110

Vulnerability from fkie_nvd - Published: 2026-03-02 16:16 - Updated: 2026-06-17 10:22
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may send overly long `addDhcpRules` data. When these rules enter the `addDhcpRule` function and are processed by `ret = sscanf(pRule, " %d\t%[^\t]\t%[^\n\r\t]", &dhcpsIndex, dhcpsIP, dhcpsMac);`, the lack of size validation for the rules could lead to buffer overflows in `dhcpsIndex`, `dhcpsIP`, and `dhcpsMac`.
References
cve@mitre.orghttps://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2026-24110Exploit, Third Party Advisory
cve@mitre.orghttps://www.tenda.com.cn/material/show/2707Product
Impacted products
Vendor Product Version
tenda w20e_firmware 15.11.0.6
tenda w20e 4.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
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      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:o:tenda:w20e_firmware:15.11.0.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "31C1283D-8DCF-49C0-92FF-34CF842D00BF",
              "vulnerable": true
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          "negate": false,
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          "negate": false,
          "operator": "OR"
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      ],
      "operator": "AND"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may send overly long `addDhcpRules` data. When these rules enter the `addDhcpRule` function and are processed by `ret = sscanf(pRule, \" %d\\t%[^\\t]\\t%[^\\n\\r\\t]\", \u0026dhcpsIndex, dhcpsIP, dhcpsMac);`, the lack of size validation for the rules could lead to buffer overflows in `dhcpsIndex`, `dhcpsIP`, and `dhcpsMac`."
    },
    {
      "lang": "es",
      "value": "Se descubri\u00f3 un problema en Tenda W20E V4.0br_V15.11.0.6. Los atacantes pueden enviar datos \u0027addDhcpRules\u0027 excesivamente largos. Cuando estas reglas entran en la funci\u00f3n \u0027addDhcpRule\u0027 y son procesadas por \u0027ret = sscanf(pRule, \" %d\\t%[^\\t]\\t%[^\\n\\r\\t]\", \u0026amp;dhcpsIndex, dhcpsIP, dhcpsMac);\u0027, la falta de validaci\u00f3n del tama\u00f1o de las reglas podr\u00eda provocar desbordamientos de b\u00fafer en \u0027dhcpsIndex\u0027, \u0027dhcpsIP\u0027 y \u0027dhcpsMac\u0027."
    }
  ],
  "id": "CVE-2026-24110",
  "lastModified": "2026-06-17T10:22:38.410",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-24110",
          "options": [
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              "exploitation": "poc"
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            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-03-02T16:06:01.336928Z",
          "version": "2.0.3"
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  "published": "2026-03-02T16:16:24.547",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2026-24110"
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      "tags": [
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      "url": "https://www.tenda.com.cn/material/show/2707"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
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          "value": "CWE-120"
        }
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      "type": "Secondary"
    }
  ]
}



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