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CVE-2018-8430

Status: ModifiedHigh (7.8)—

A remote code execution vulnerability exists in Microsoft Word if a user opens a specially crafted PDF file, aka "Word PDF Remote Code Execution Vulnerability." This affects Microsoft Word, Microsoft Office.

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 (2)

Microsoft — OfficeMicrosoft — Word

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-8430",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "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": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Microsoft Word",
          "versions": [
            {
              "status": "affected",
              "version": "2013 RT Service Pack 1"
            },
            {
              "status": "affected",
              "version": "2013 Service Pack 1 (32-bit editions)"
            },
            {
              "status": "affected",
              "version": "2013 Service Pack 1 (64-bit editions)"
            },
            {
              "status": "affected",
              "version": "2016 (32-bit edition)"
            },
            {
              "status": "affected",
              "version": "2016 (64-bit edition)"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Office",
          "versions": [
            {
              "status": "affected",
              "version": "2016 Click-to-Run (C2R) for 32-bit editions"
            },
            {
              "status": "affected",
              "version": "2016 Click-to-Run (C2R) for 64-bit editions"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-09-13T00:29:03.303",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/105212",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1041638",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8430",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/105212",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1041638",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8430",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A remote code execution vulnerability exists in Microsoft Word if a user opens a specially crafted PDF file, aka \"Word PDF Remote Code Execution Vulnerability.\" This affects Microsoft Word, Microsoft Office."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de ejecución remota de código en Microsoft Word si un usuario abre un archivo PDF especialmente manipulado. Esto también se conoce como \"Word PDF Remote Code Execution Vulnerability\". Esto afecta a Microsoft Word y Microsoft Office."
    }
  ],
  "lastModified": "2026-06-17T02:04:51.307",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "120690A6-E0A1-4E36-A35A-C87109ECC064"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2013:sp1:*:*:rt:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F7DDFFB8-2337-4DD7-8120-56CC8EF134B4"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2016:*:*:*:click-to-run:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E74CB3D6-B0D7-4A6C-ABAA-170C7710D856"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4DA042D4-B14E-4DDF-8423-DFB255679EFE"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}