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CVE-2021-33572

Estado: ModificadaMedia (6.5)—

A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Linux Security whereby the FSAVD component used in certain F-Secure products can crash while scanning larger packages/fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in Denial-of-Service (DoS) of the Anti-Virus engine.

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 (4)

F-secure — Cloud Protection FOR SalesforceF-secure — Elements FOR Microsoft 365F-secure — Endpoint ProtectionF-secure — Linux Security

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-33572",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve-notifications-us@f-secure.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.5,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve-notifications-us@f-secure.com",
      "affectedData": [
        {
          "vendor": "F-Secure",
          "product": "F-Secure Products",
          "versions": [
            {
              "status": "affected",
              "version": "All Version"
            }
          ],
          "platforms": [
            "x86 & x64"
          ]
        }
      ]
    }
  ],
  "published": "2021-06-21T12:15:07.963",
  "references": [
    {
      "url": "https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame",
      "tags": [
        "Product"
      ],
      "source": "cve-notifications-us@f-secure.com"
    },
    {
      "url": "https://www.f-secure.com/en/business/support-and-downloads/security-advisories",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve-notifications-us@f-secure.com"
    },
    {
      "url": "https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fame",
      "tags": [
        "Product"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.f-secure.com/en/business/support-and-downloads/security-advisories",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve-notifications-us@f-secure.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Linux Security whereby the FSAVD component used in certain F-Secure products can crash while scanning larger packages/fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in Denial-of-Service (DoS) of the Anti-Virus engine."
    },
    {
      "lang": "es",
      "value": "Se ha detectado una vulnerabilidad de Denegación de Servicio (DoS) en F-Secure Linux Security por la que el componente FSAVD usado en determinados productos de F-Secure puede bloquearse mientras se analizan paquetes y archivos de gran tamaño. La explotación puede ser desencadenada remotamente por un atacante. Un ataque con éxito resultará en una Denegación de Servicio (DoS) del motor antivirus"
    }
  ],
  "lastModified": "2026-06-17T03:54:48.713",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:f-secure:cloud_protection_for_salesforce:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F04F9410-836A-428B-9959-4662E79D963D"
            },
            {
              "criteria": "cpe:2.3:a:f-secure:elements_for_microsoft_365:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FB5FAF08-98B4-46C1-890A-958860119ECF"
            },
            {
              "criteria": "cpe:2.3:a:f-secure:endpoint_protection:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9F0E00CE-AB6D-4992-91D8-32834618F088"
            },
            {
              "criteria": "cpe:2.3:a:f-secure:linux_security:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EEDCC601-0F8F-4D23-9DE1-5B4B72C689AE"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve-notifications-us@f-secure.com"
}