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CVE-2018-8244

Status: ModifiedMedium (6.5)—

An elevation of privilege vulnerability exists when Microsoft Outlook does not validate attachment headers properly, aka "Microsoft Outlook Elevation of Privilege Vulnerability." This affects Microsoft Office, Microsoft Outlook.

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 (3)

Microsoft — OfficeMicrosoft — OutlookMicrosoft — Outlook RT

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2018-8244",
  "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:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "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": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "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"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Outlook",
          "versions": [
            {
              "status": "affected",
              "version": "2010 Service Pack 2 (32-bit editions)"
            },
            {
              "status": "affected",
              "version": "2010 Service Pack 2 (64-bit editions)"
            },
            {
              "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)"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-06-14T12:29:02.303",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/104323",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1041107",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8244",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/104323",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1041107",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8244",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An elevation of privilege vulnerability exists when Microsoft Outlook does not validate attachment headers properly, aka \"Microsoft Outlook Elevation of Privilege Vulnerability.\" This affects Microsoft Office, Microsoft Outlook."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de elevación de privilegios cuando Microsoft Outlook no valida correctamente las cabeceras de adjuntos. Esto también se conoce como \"Microsoft Outlook Elevation of Privilege Vulnerability\". Esto afecta a Microsoft Office y Microsoft Outlook."
    }
  ],
  "lastModified": "2026-06-17T02:04:29.830",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "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:outlook:2010:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F9A115C1-45EB-4688-AD7C-C1854850EE9B"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D7B6DF1E-0DDA-4809-B216-7CEFE0A53E2B"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E2B1657C-0FF4-461A-BE2A-641275C4B0A0"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:outlook_rt:2013:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "714B6904-1F99-403A-B0FE-763893EB4F08"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}