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CVE-2021-22699

Estado: ModificadaAlta (7.5)—

Improper Input Validation vulnerability exists in Modicon M241/M251 logic controllers firmware prior to V5.1.9.1 that could cause denial of service when specific crafted requests are sent to the controller over HTTP.

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 (2)

Schneider-electric — Modicon M241 FirmwareSchneider-electric — Modicon M251 Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
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          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
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      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Modicon M241/M251 logic controllers firmware prior to V5.1.9.1",
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  "published": "2021-05-26T20:15:08.863",
  "references": [
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      "url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-05",
      "tags": [
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          "value": "CWE-20"
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  "lastModified": "2026-06-17T03:37:35.310",
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