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CVE-2021-44158

Estado: ModificadaAlta (8)—

ASUS RT-AX56U Wi-Fi Router is vulnerable to stack-based buffer overflow due to improper validation for httpd parameter length. An authenticated local area network attacker can launch arbitrary code execution to control the system or disrupt service.

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)

Asus — Rt-ax56u Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-44158",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.7,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/AC:L/Au:S/C:C/I:C/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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        "acInsufInfo": false,
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        "type": "Secondary",
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        "cvssData": {
          "scope": "UNCHANGED",
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        "type": "Primary",
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        "cvssData": {
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  "affected": [
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      "source": "twcert@cert.org.tw",
      "affectedData": [
        {
          "vendor": "ASUS",
          "product": "RT-AX56U",
          "versions": [
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              "status": "affected",
              "version": "3.0.0.4.386.44266"
            }
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  "published": "2022-01-03T10:15:08.190",
  "references": [
    {
      "url": "https://www.twcert.org.tw/tw/cp-132-5431-d23be-1.html",
      "tags": [
        "Third Party Advisory"
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      "source": "twcert@cert.org.tw"
    },
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      "url": "https://www.twcert.org.tw/tw/cp-132-5431-d23be-1.html",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "twcert@cert.org.tw",
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
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    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1284"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ASUS RT-AX56U Wi-Fi Router is vulnerable to stack-based buffer overflow due to improper validation for httpd parameter length. An authenticated local area network attacker can launch arbitrary code execution to control the system or disrupt service."
    },
    {
      "lang": "es",
      "value": "El router Wi-Fi ASUS RT-AX56U es vulnerable a un desbordamiento del búfer en la región stack de la memoria debido a una comprobación inapropiada de la longitud del parámetro httpd. Un atacante autenticado de la red de área local puede lanzar una ejecución de código arbitrario para controlar el sistema o interrumpir el servicio"
    }
  ],
  "lastModified": "2026-06-17T04:11:58.267",
  "configurations": [
    {
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  "sourceIdentifier": "twcert@cert.org.tw"
}