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CVE-2021-45739

Estado: ModificadaAlta (7.5)—

TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the Form_Login function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the flag parameter.

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)

Totolink — A720r Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-45739",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
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        "obtainAllPrivilege": false,
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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  "affected": [
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  "published": "2022-02-04T02:15:08.340",
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  "descriptions": [
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      "value": "TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the Form_Login function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the flag parameter."
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      "lang": "es",
      "value": "Se ha detectado que TOTOLINK A720R versión v4.1.5cu.470_B20200911, contiene un desbordamiento de pila en la función Form_Login. Esta vulnerabilidad permite a atacantes causar una denegación de servicio (DoS) por medio del parámetro flag"
    }
  ],
  "lastModified": "2026-06-17T04:14:02.183",
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