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CVE-2021-27114

Estado: ModificadaCrítica (9.8)—

An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the"'s_ip" and "s_mac" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Dlink — Dir-816 Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-27114",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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    "cvssMetricV31": [
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          "scope": "UNCHANGED",
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          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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  "affected": [
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      "affectedData": [
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          "product": "n/a",
          "versions": [
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              "status": "affected",
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  "published": "2021-04-14T14:15:13.647",
  "references": [
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      "url": "https://github.com/GD008/vuln/blob/main/DIR-816_stackoverflow.md",
      "tags": [
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        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
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      "tags": [
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    {
      "url": "https://github.com/GD008/vuln/blob/main/DIR-816_stackoverflow.md",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the\"'s_ip\" and \"s_mac\" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en los dispositivos D-Link DIR-816 A2 versión 1.10 B05. Dentro de la función handler de la ruta /goform/addassignment, una entrada de texto muy larga para los campos \"'s_ip\" y \"s_mac\" podría conllevar a un desbordamiento del búfer en la región stack de la memoria y sobrescribir la dirección de retorno"
    }
  ],
  "lastModified": "2026-06-17T03:44:18.633",
  "configurations": [
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