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CVE-2018-5201

Status: ModifiedMedium (5.5)—

Hancom Office 2018 10.0.0.8214 and earlier, Hancom Office NEO 9.6.1.10472 and earlier, Hancom Office 2014 9.1.1.4540 and earlier, Hancom Office 2010 8.5.8.1724 and earlier versions have a heap overflow vulnerability when handling Compound File in document. This result in a program crash or denial of service conditions.

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 (4)

Hancom — Hancom Office 2010Hancom — Hancom Office 2014Hancom — Hancom Office 2018Hancom — Hancom Office NEO

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-5201",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "vuln@krcert.or.kr",
      "affectedData": [
        {
          "vendor": "HANCOM",
          "product": "Hancom Office",
          "versions": [
            {
              "status": "affected",
              "version": "Hancom Office 2018 10.0.0.8214 and earlier, Hancom Office NEO 9.6.1.10472 and earlier, Hancom Office 2014 9.1.1.4540 and earlier, Hancom Office 2010 8.5.8.1724 and earlier versions"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-12-21T16:29:00.240",
  "references": [
    {
      "url": "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=30116",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "vuln@krcert.or.kr"
    },
    {
      "url": "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=30116",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Hancom Office 2018 10.0.0.8214 and earlier, Hancom Office NEO 9.6.1.10472 and earlier, Hancom Office 2014 9.1.1.4540 and earlier, Hancom Office 2010 8.5.8.1724 and earlier versions have a heap overflow vulnerability when handling Compound File in document. This result in a program crash or denial of service conditions."
    },
    {
      "lang": "es",
      "value": "Hancom Office 2018, en versiones 10.0.0.8214 y anteriores; Hancom Office NEO, en versiones 9.6.1.10472 y anteriores; Hancom Office 2014, en versiones 9.1.1.4540 y anteriores; y Hancom Office 2010, en versiones 8.5.8.1724 y anteriores, tienen una vulnerabilidad de desbordamiento de memoria dinámica (heap) al manejar un archivo compuesto en un documento. Esto resulta en un cierre inesperado del programa o en una denegación de servicio (DoS)."
    }
  ],
  "lastModified": "2026-06-17T01:59:49.973",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hancom:hancom_office_2010:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D01D4332-A33A-498F-BD3B-A3D89BBCCF49",
              "versionEndIncluding": "8.5.8.1724"
            },
            {
              "criteria": "cpe:2.3:a:hancom:hancom_office_2014:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7F2B592D-EE5B-417C-BC1E-EDA15E53CA79",
              "versionEndIncluding": "9.1.1.4540"
            },
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              "matchCriteriaId": "BB84EA19-F167-477D-8DB4-88FF2536797D",
              "versionEndIncluding": "10.0.0.8214"
            },
            {
              "criteria": "cpe:2.3:a:hancom:hancom_office_neo:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6594512A-F266-42B3-A140-6A66BFE4837D",
              "versionEndIncluding": "9.6.1.10472"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "vuln@krcert.or.kr"
}