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CVE-2020-7869

Status: ModifiedHigh (8.8)—

An improper input validation vulnerability of ZOOK software (remote administration tool) could allow a remote attacker to create arbitrary file. The ZOOK viewer has the "Tight file CMD" function to create file. An attacker could create and execute arbitrary file in the ZOOK agent program using "Tight file CMD" without authority.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Mastersoft — Zook

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-7869",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/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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        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
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          "product": "ZOOK",
          "versions": [
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              "version": "2.0.4.6",
              "versionType": "custom",
              "lessThanOrEqual": "2.0.4.6"
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          "platforms": [
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  "published": "2021-06-29T14:15:08.237",
  "references": [
    {
      "url": "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36090",
      "tags": [
        "Third Party Advisory"
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      "url": "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36090",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-20"
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          "value": "CWE-20"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An improper input validation vulnerability of ZOOK software (remote administration tool) could allow a remote attacker to create arbitrary file. The ZOOK viewer has the \"Tight file CMD\" function to create file. An attacker could create and execute arbitrary file in the ZOOK agent program using \"Tight file CMD\" without authority."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de comprobación de entrada inapropiada del software ZOOK (herramienta de administración remota) podría permitir a un atacante remoto crear un archivo arbitrario. La visualización ZOOK presenta la función \"Tight file CMD\" para crear archivos. Un atacante podría crear y ejecutar un archivo arbitrario en el programa agente ZOOK usando \"Tight file CMD\" sin autoridad"
    }
  ],
  "lastModified": "2026-06-17T03:25:34.767",
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  "sourceIdentifier": "vuln@krcert.or.kr"
}