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CVE-2021-33842

Estado: ModificadaAlta (8.8)—

Improper Authentication vulnerability in the cookie parameter of Circutor SGE-PLC1000 firmware version 0.9.2b allows an attacker to perform operations as an authenticated user. In order to exploit this vulnerability, the attacker must be within the network where the device affected is located.

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)

Circutor — Sge-plc1000 Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-33842",
  "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"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 5.1,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve-coordination@incibe.es",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve-coordination@incibe.es",
      "affectedData": [
        {
          "vendor": "Circutor",
          "product": "SGE-PLC1000",
          "versions": [
            {
              "status": "affected",
              "version": "0.9.2b"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2021-06-09T12:15:07.957",
  "references": [
    {
      "url": "https://www.incibe.es/en/incibe-cert/notices/aviso-sci/circutor-sge-plc1000-improper-authentication",
      "source": "cve-coordination@incibe.es"
    },
    {
      "url": "https://www.incibe.es/en/incibe-cert/notices/aviso-sci/circutor-sge-plc1000-improper-authentication",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve-coordination@incibe.es",
      "description": [
        {
          "lang": "en",
          "value": "CWE-565"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-565"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Authentication vulnerability in the cookie parameter of Circutor SGE-PLC1000 firmware version 0.9.2b allows an attacker to perform operations as an authenticated user. In order to exploit this vulnerability, the attacker must be within the network where the device affected is located."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Autenticación Inapropiada en el parámetro cookies de Circutor SGE-PLC1000 versión del firmware 0.9.2b, permite a un atacante llevar a cabo operaciones como un usuario autenticado. Para explotar esta vulnerabilidad, el atacante debe estar dentro de la red donde se encuentra el dispositivo afectado"
    }
  ],
  "lastModified": "2026-06-17T03:55:17.827",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:circutor:sge-plc1000_firmware:0.9.2b:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5D6B02E0-DE36-45F5-AD3D-908E30548661"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:h:circutor:sge-plc1000:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "FFF41215-1018-42DD-9A7E-BBC2E5B4522D"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "cve-coordination@incibe.es"
}